Lubricating oil compositions for improved cleanliness in ammonia engines and methods of use thereof

Abstract

Lubricating oil compositions, concentrates therefor and methods of improving engine cleanliness for ammonia fueled internal combustion engines including, by weight of the lubricating oil composition: greater than 50 wt.% oil of lubricating viscosity; 0.1 to 9.0 wt.% one or more, optionally borated, lower molecular weight polyisobutylene succinimide dispersants; one or more overbased metal salicylate and / or metal carboxylate detergents, either optionally in mixture with a metal sulfonate, having a Total Base Number from 9 to 500 mgKOH / g and delivering at least 5 mmol of total soap to the composition; and from about 0.08 wt.% to about 2.0 wt.% one or more zinc dialkyl dithiophosphate compounds. The lubricating oil composition has a total sulfated ash of less than or equal to 5.0 wt.%, a total phosphorous level of less than or equal to 0.120 wt.%, and an overall viscosity of less than or equal to 25 cSt (KV100).

Description

LUBRICATING OIL COMPOSITIONS FOR IMPROVED CLEANLINESS IN AMMONIA ENGINES AND METHODS OF USE THEREOFFIELDThis disclosure relates to lubricating oil compositions for use in ammonia fueled internal combustion engines. It more particularly relates to the use of lubricating oil compositions for use in marine internal combustion engines for improved cleanliness. This disclosure also provides for methods of using such lubricating oil compositions and method of testing lubricating oils for cleanliness performance.BACKGROUNDThe present invention relates to lubricating oil compositions for use in ammonia fueled internal combustion engines (such as ammonia fueled engines using spark, compression or spark assisted compression ignition), which exhibit improved cleanliness performance. The present invention further relates to lubricating oil compositions for use in ammonia fueled compression ignited, or spark assisted compression-ignited internal combustion engines such compositions often referred to as crankcase lubricants; and to the use of additives in such lubricating oil compositions for reducing harmful deposits and build-up in the engine.Ammonia when used as a fuel for internal combustion engines provides advantages in terms of zero carbon emissions. That is, ammonia does not emit CO2after combustion, and even if about 5% of a primer fuel is used, the combustion of ammonia can still realize more than 95% reduction in emissions compared with traditional fossil fuel sources. Ammonia also has a high energy density and is easy to store. In comparison to hydrogen, ammonia can be stored at 20°C, in contrast to the storage of hydrogen at -253°C. The flammability limit of ammonia is also narrower than that of hydrogen, so the combustion process thereof is safer than that of hydrogen. Ammonia easily absorbs water, and thus easily causes emulsification of engine oil in the engine, and therefore reduces the lubricity of the engine oil.In the push to make internal combustion engines low-carbon and zero-carbon, ammonia has become one of the popular choices for new energy. With the introduction of green and low-carbon goals in the transportation and power generation industries, ammonia is also gaining a lot of momentum to help meet these goals by replacing fossil fuels. In particular, in the maritime industry, ammonia is viewed as a positive choice in helping to reduce carbon dioxide emissions. The International Maritime Organization (IMO) has a goal of reducing carbon intensity from international shipping by at least 50 percent by 2050. Ammonia as a fuel for marine applications will be a key enabler to meeting these future reduced carbon intensity goals.However, with these potential advantages afforded by use of ammonia as an internal combustion engine (ICE) fuel, there are additional challenges to conventional fuels in such applications. Ammonia in ICE uses pilot fuel (any of: diesel, Marine Distillate Oil, Very Low Sulfur Fuel Oil (VLSFO), Heavy Fuel Oil (HFO), hydrogen, cracking hydrogen (ammonia, hydrogen mixture), or methanol). The combination of pilot fuel and ammonia combustion provides a severe oxidative and nitrogen-rich environment for the lubricant. This severe environment may result in cleanliness challenges due to formation of by-products (from reaction of ammonia with oxidation products) that form deposits in the engine.Hence, there is a need for lubricating oil compositions for use in ammonia fueled ICEs that show less degradation during use, less of a propensity for deposit formation, and less of a propensity for deposits to form on the internal surfaces of the ammonia fueled ICE. Therefore, there is a need for lubricating oil compositions for use in ammonia fueled ICEs that exhibit improved cleanliness performance compared to traditional lubricating oil compositions used in fossil fueled ICEs. Therefore, lubricating oil compositions suitable for ammonia-fueled engines need to be developed.SUMMARYAccording to the present disclosure, provided is a lubricating oil composition for ammonia fueled internal combustion engines (AICE) comprising or resulting from the admixing of:a) an oil of lubricating viscosity at greater than 50 wt.% of the composition comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof;b) optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more);c) one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), wherein the treat level of the combination of the higher molecular weight PIBSA-PAM and lower molecular weight PIBSA-PAM is from 2.5 to 12.0 wt.% of the composition, wherein the treat level of the lower molecular weight PIBSA-PAM is from 0.1 to 9.0 wt.% of the composition, and wherein the treat level of the higher molecular weight PIBSA-PAM is less than or equal to 3.0 wt.%; andd) one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, or combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; ande) one or more zinc dialkyl dithiophosphate (ZDDP) compounds at from about 0.08 wt.% to about 2.0 wt.% of the lubricating oil composition;wherein the lubricating oil composition has a total sulfated ash of less than or equal to 5.0 wt.%, and a total phosphorous level of less than or equal to 0.120 wt.%, and a viscosity of less than or equal to 25 cSt (KV100); and wherein the lubricating oil composition upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in a MCT (GFC Lu 27-A-13;Microcoking Test for Automotive Lubricants. Carburants, Lubrifiants & Fluides pour le Transport: Paris, France, 2018) cleanliness merit rating change versus a comparable lubricating oil composition (i.e., the same lubricating oil composition) not exposed to ammonia contamination of less than or equal to 4.0 merits.A further aspect of the present disclosure relates to an advantageous method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) comprising:i) providing to the ammonia fueled internal combustion engine a lubricating oil composition comprising or resulting from the admixing of:a) an oil of lubricating viscosity at greater than 50 wt.% of the composition comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof;b) optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more);c) one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), wherein the treat level of the combination of the higher molecular weight PIBSA-PAM and lower molecular weight PIBSA-PAM is from 2.5 to 12.0 wt.% of the composition, wherein the treat level of the lower molecular weight PIBSA-PAM is from 0.1 to 9.0 wt.% of the composition, and wherein the treat level of the higher molecular weight PIBSA-PAM is less than or equal to 3.0 wt.%; andd) one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, and combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) by D2896 greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; ande) one or more zinc dialkyl dithiophosphate (ZDDP) compounds at from about 0.08 wt.% to about 2.0 wt.% of the lubricating oil composition;wherein the lubricating oil composition has a total sulfated ash of less than or equal to 5.0 wt.%, and a total phosphorous level of less than or equal to 0.120 wt.%, and an overall viscosity of less than or equal to 25 cSt (KV100); andii) providing a fuel comprising ammonia to the ammonia fueled internal combustion engine; andiii) combusting the fuel in the ammonia fueled internal combustion engine; andwherein the lubricating oil composition upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in a MCT (GFC Lu 27-A-13) cleanliness merit rating change versus a comparable lubricating oil composition (i.e., the same lubricating oil composition) not exposed to ammonia contamination of less than or equal to 4.0 merits.A still further aspect of the present disclosure relates to the use of a lubricant composition for improving engine cleanliness in an ammonia fueled internal combustion engine (AICE), wherein the lubricant composition comprises:a) an oil of lubricating viscosity at greater than 50 wt.% of the composition comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof;b) optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more);c) one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), wherein the treat level of the combination of the higher molecular weight PIBSA-PAM and lower molecular weight PIBSA-PAM is from 2.5 to 12.0 wt.% of the composition, wherein the treat level of the lower molecular weight PIBSA-PAM is from 0.1 to 9.0 wt.% of the composition, and wherein the treat level of the higher molecular weight PIBSA-PAM is less than or equal to 3.0 wt.%; andd) one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, and combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) by D2896 greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; ande) one or more zinc dialkyl dithiophosphate (ZDDP) compounds at from about 0.08 wt.% to about 2.0 wt.% of the lubricating oil composition;wherein the lubricating oil composition has a total sulfated ash of less than or equal to 5.0 wt.%, and a total phosphorous level of less than or equal to 0.120 wt.%, and a viscosity of less than or equal to 25 cSt (KV100), preferably wherein the lubricating oil composition upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in a MCT (GFC Lu 27-A-13) cleanliness merit rating change versus a comparable lubricating oil composition (i.e., the same lubricating oil composition) not exposed to ammonia contamination of less than or equal to 4.0 merits.A still further aspect of the present disclosure relates to an advantageous concentrate composition comprising or resulting from the admixing of: from 1 to less than or equal to 50 wt.% of one or more base oils; from 2 to 40 wt.% of one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate and combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; from 2 to 40 wt.% of optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more), and one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), and from 2 to 20 wt.% of one or more zinc hydrocarbyl diphosphate compounds, wherein the one or more zinc hydrocarbyl diphosphate compounds include hydrocarbyl groups derived from one or more primary alcohols, one or more secondary alcohols or a combination of primary and secondary alcohols.Other aspects of the present disclosure may become apparent from the Detailed Description and Examples sections hereinbelow.DefinitionsFor purposes of this specification and all claims to this invention, the following words and expressions, if and when used, have the meanings ascribed below.For purposes herein, the new numbering scheme for the Periodic Table of the Elements is used as set out in CHEMICAL AND ENGINEERING NEWS, 63(5), 27 (1985),i.e.,Alkali metalsare group 1 metals (e.g., Li, Na, K, etc.) andAlkaline earth metalsare group 2 metals (e.g., Mg, Ca, Ba, etc.).The term "comprising" or any cognate word specifies the presence of stated features, steps, or integers or components, but does not preclude the presence or addition of one or more other features, steps, integers, components or groups thereof. The expressions "consists of" or "consists essentially of" or cognates may be embraced within “comprises” or cognates, wherein "consists essentially of" permits inclusion of substances not materially affecting the characteristics of the composition to which it applies.The term "about" means approximately, which includes values obtained by rounding. As used herein, the term “about” modifying the quantity of an ingredient, component, or reactant of the invention employed refers to variation in the numerical quantity that can occur, for example, through typical measuring and liquid handling procedures used for making concentrates or lubricating oil compositions. Furthermore, variation can occur from inadvertent error in measuring procedures, differences in the manufacture, source, or purity of the ingredients employed to make the compositions or carry out the methods, and the like. In one aspect, the term “about” means within 10% of the reported numerical value. In another aspect, the term “about” means within 5% of the reported numerical value. Yet, in another aspect, the term “about” means within 10, 9, 8, 7, 6, 5, 4, 3, 2, or 1% of the reported numerical value.The term "LOC" means lubricating oil composition.The term "major amount" means more than 50 mass % of a composition, such as more than 60 mass % of a composition, such as more than 70 mass % of a composition, such as from 80 to 99.009 mass % of a composition, such as from 80 to 99.9 mass % of a composition, of a composition based upon the mass of the composition.The term "mass %" means mass percent of a component, based upon the mass of the composition as measured in grams, unless otherwise indicated, and is alternately referred to as weight percent ("weight %", "wt%", "wt. %" or "%w / w").The term "minor amount" means 50 mass % or less of a composition; such as 40 mass % or less of a composition; such as 30 mass % or less of a composition, such as from 20 to 0.001 mass %, such as from 20 to 0.1 mass %, based upon the mass of the composition.The term "active ingredient" (also referred to as "a.i." or "A.I.") refers to additive material that is neither diluent nor solvent.The terms "oil-soluble" and "oil-dispersible," or cognate terms, used herein do not necessarily indicate that the compounds or additives are soluble, dissolvable, miscible, or are capable of being suspended in the oil in all proportions. These do mean, however, that they are, for example, soluble or stably dispersible in oil to an extent sufficient to exert their intended effect in the environment in which the oil is employed. Moreover, the additional incorporation of other additives may also permit incorporation of higher levels of a particular additive, if desired.The term "hydrocarbon" means a compound of hydrogen and carbon atoms. A "heteroatom" is an atom other than carbon or hydrogen. When referred to as "hydrocarbons," particularly as "refined hydrocarbons," the hydrocarbons may also contain one or more heteroatoms or heteroatom-containing groups (such as halo, especially chloro and fluoro, amino, alkoxyl, mercapto, alkylmercapto, nitro, nitroso, sulfoxy, etc.) in minor amounts (e.g., where the heteroatom(s) do not substantially alter the hydrocarbon properties of the hydrocarbon compound).The terms "group" and "radical" are used interchangeably herein.The term "hydrocarbyl" means a radical that contains hydrogen and carbon atoms. Preferably, the group consists essentially of, more preferably consists only of, hydrogen and carbon atoms, unless specified otherwise. Preferably, the hydrocarbyl group comprises an aliphatic hydrocarbyl group. The term "hydrocarbyl" includes "alkyl," "alkenyl," "alkynyl," and "aryl" as defined herein. Hydrocarbyl groups may contain one or more atoms / groups other than carbon and hydrogen provided they do not affect the essentially hydrocarbyl nature of the hydrocarbyl group. Those skilled in the art will be aware of such atoms / groups (e.g., halo, especially chloro and fluoro, amino, alkoxyl, mercapto, alkylmercapto, nitro, nitroso, sulfoxy, etc.).The term "alkyl" means a radical of carbon and hydrogen (such as a C1to C30, such as a C1to C12group). Alkyl groups in a compound are typically bonded to the compound directly via a carbon atom. Unless otherwise specified, alkyl groups may be linear (i.e., unbranched) or branched, be cyclic, acyclic, or part cyclic / acyclic. Preferably, the alkyl group comprises a linear or branched acyclic alkyl group. Representative examples of alkyl groups include, but are not limited to, methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, iso-butyl, tert-butyl, n-pentyl, iso-pentyl, neo-pentyl, hexyl, heptyl, octyl, dimethyl hexyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, icosyl and triacontyl.The term "alkenyl" means a radical of carbon and hydrogen (such as a C2to C30radical, such as a C2to C12radical) having at least one double bond. Alkenyl groups in a compound are typically bonded to the compound directly via a carbon atom. Unless otherwise specified, alkenyl groups may be linear (i.e., unbranched) or branched, be cyclic, acyclic or part cyclic / acyclic.The term "alkylene" means a C1to C20, preferably a C1to C10, bivalent saturated aliphatic radical, which may be linear or branched. Representative examples of alkylene include methylene, ethylene, propylene, butylene, pentylene, hexylene, heptylene, octylene, nonylene, decylene, 1-methyl ethylene, 1-ethyl ethylene, 1-ethyl-2-methyl ethylene, 1,1-dimethyl ethylene and 1-ethyl propylene.An "olefin", alternatively referred to as "alkene," is a linear, branched, or cyclic compound of carbon and hydrogen having at least one double bond. For purposes of this specification and the claims appended thereto, when a polymer or copolymer is referred to as comprising an olefin, the olefin present in such polymer or copolymer is the polymerized form of the olefin. For example, when a copolymer is said to have an "isoprene" content of 55 mass% to 95 mass%, it is understood that the mer unit in the copolymer is derived from isoprene in the polymerization reaction and said derived units are present at 55 mass% to 95 mass%, based upon the weight of the copolymer. A "polymer" has two or more of the same or different mer units. A "homopolymer" is a polymer having mer units that are the same. A "copolymer" is a polymer having two or more mer units that are different from each other. "Different" as used to refer to mer units indicates that the mer units differ from each other by at least one atom or are different isomerically. An "isoprene polymer" or "isoprene copolymer" is a polymer or copolymer comprising at least 50 mol % isoprene derived units, a "butadiene polymer" or "butadiene copolymer" is a polymer or copolymer comprising at least 50 mol % butadiene derived units, and so on. Likewise, when a polymer is referred to as a "partially or fully saturated polymer comprising C4-5olefins," the C4-5olefin(s) present in such polymer or copolymer are the polymerized form of the olefin(s), and the polymer has been partially or fully saturated (such as by hydrogenation) after polymerization of the monomers.The term "alkynyl" means a C2to C30(such as a C2to C12) radical, which includes at least one carbon-to-carbon triple bond.The term "aryl" means a group containing at least one aromatic ring, such a cyclopentadiene, phenyl, naphthyl, anthracenyl, and the like. Aryl groups are typically C5to C40(such as C5to C18, such as C6to C14) aryl groups, optionally substituted by one or more hydrocarbyl groups, heteroatoms, or heteroatom-containing groups (such as halo, hydroxyl, alkoxy and amino groups). Preferred aryl groups include phenyl and naphthyl groups and substituted derivatives thereof, especially phenyl, and alkyl substituted derivatives of phenyl.The term "substituted" means that a hydrogen atom has been replaced with hydrocarbon group, a heteroatom, or a heteroatom-containing group. An alkyl substituted derivative means a hydrogen atom has been replaced with an alkyl group. An "alkyl substituted phenyl" is a phenyl group where a hydrogen atom has been replaced by an alkyl group, such as a C1to C20alkyl group, such as methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, iso-butyl, tert-butyl, n-pentyl, iso-pentyl, neo-pentyl, hexyl, heptyl, octyl, dimethyl hexyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, icosyl and / or triacontyl.The term "halogen" or "halo" means a group 17 atom or a radical of group 17 atom, such as fluoro, chloro, bromo, and iodo.The term "ashless" in relation to an additive means the composition does not include a metal. The term "ash-containing" in relation to an additive means the composition includes a metal.The term "effective amount" in respect of an additive means an amount of such an additive in a lubricating oil composition so that the additive provides the desired technical effect.The term "effective minor amount" in respect of an additive means an amount of such an additive of less than 50 mass % of the lubricating oil composition so that the additive provides the desired technical effect. The term "effective major amount" in respect of an additive means an amount of such an additive of 50 mass % or more of the lubricating oil composition so that the additive provides the desired technical effect.The term "ppm" means parts per million by mass, based on the total mass of the lubricating oil composition, unless otherwise indicated.The term "metal content" of a lubricating oil composition or of an additive component, for example, magnesium content, molybdenum content or total metal content (i.e., the sum of all individual metal contents), is measured by ASTM D5185.The term "aliphatic hydrocarbyl fatty acid" means a monocarboxylic acid having an aliphatic C7to C29, preferably a C9to C27, most preferably a C11to C23hydrocarbyl chain. Such compounds may be referred to herein as aliphatic (C7to C29), more preferably (C9to C27), most preferably (C11to C23), hydrocarbyl monocarboxylic acid(s) or hydrocarbyl fatty acid(s) (wherein Cx to Cy designates the total number of carbon atoms in the aliphatic hydrocarbyl chain of the fatty acid, the fatty acid itself due to the presence of the carboxyl carbon atom includes a total of Cx+1 to Cy+1 carbon atoms). Preferably, the aliphatic hydrocarbyl fatty acid, inclusive of the carboxyl carbon atom, has an even number of carbon atoms. The aliphatic hydrocarbyl chain of the fatty acid may be saturated or unsaturated (i.e., includes at least one carbon-to-carbon double bond); preferably, the aliphatic hydrocarbyl chain is unsaturated and includes at least one carbon-to-carbon double bond – such fatty acids may be obtained from natural sources (e.g., derived from animal or vegetable oils) and / or by reduction of the corresponding saturated fatty acid. It will be appreciated that a proportion of the aliphatic hydrocarbyl chain(s) of the corresponding aliphatic hydrocarbyl fatty acid ester(s) is unsaturated (i.e., includes at least one carbon-to-carbon double bond) to permit reaction with other agents, such as sulfur, to form the corresponding functionalized, such as sulfurized, aliphatic hydrocarbyl fatty acid ester(s).The term "aliphatic hydrocarbyl fatty acid ester" means an ester obtainable by converting the monocarboxylic acid functional group of the corresponding aliphatic hydrocarbyl fatty acid into an ester group. Suitably, the monocarboxylic acid functional group of the aliphatic hydrocarbyl fatty acid is converted to a hydrocarbyl ester, preferably a C1to C30aliphatic hydrocarbyl ester, such as an alkyl ester, preferably a C1to C6alkyl ester, especially a methyl ester. Alternatively, or additionally, the monocarboxylic acid functional group of the aliphatic hydrocarbyl fatty acid may be in the form of the natural glycerol ester. Accordingly, the term “aliphatic hydrocarbyl fatty acid ester” embraces aliphatic hydrocarbyl fatty acid glycerol ester(s) and aliphatic hydrocarbyl fatty acid C1to C30aliphatic hydrocarbyl ester(s), [e.g., aliphatic hydrocarbyl fatty acid alkyl ester(s), more preferably aliphatic hydrocarbyl fatty acid C1to C6alkyl ester(s), especially aliphatic hydrocarbyl fatty acid methyl ester(s)]. Suitably, the term “aliphatic hydrocarbyl fatty acid ester” embraces aliphatic (C7to C29) hydrocarbyl, more preferably aliphatic (C9to C27) hydrocarbyl, most preferably aliphatic (C11to C23) hydrocarbyl fatty acid glycerol ester(s) and aliphatic (C7to C29) hydrocarbyl, more preferably aliphatic (C9to C27) hydrocarbyl, most preferably aliphatic (C11to C23) hydrocarbyl fatty acid C1to C30aliphatic hydrocarbyl ester(s). Suitably, to permit functionalization, such as sulfurization, of the aliphatic hydrocarbyl fatty acid ester(s) a proportion of the aliphatic hydrocarbyl chain(s) of the fatty acid ester(s) is unsaturated and includes at least one carbon-to-carbon double bond.The term "sulfurized aliphatic hydrocarbyl fatty acid ester" means a compound obtained by sulfurizing an aliphatic hydrocarbyl fatty acid ester as defined herein.The term "absent" or “substantially free” as it relates to components included within the lubricating oil compositions described herein and the claims thereto means that the particular component is present at 0 mass%, based upon the weight of the lubricating oil composition, or if present in the lubricating oil composition the component is present at levels that do not impact the lubricating oil composition properties, such as less than 10 ppm, or less than 1 ppm or less than 0.001 ppm. When the term “absent” is used in relation to monomer reactants and / or to repeat units in (co)polymers described herein, it means present at 0 wt%, based upon the weight of all (co)monomers in the (co)polymer, or, if present at all, at levels so low that they do not substantially impact the physical properties of the (co)polymer, such as at 0.2 wt% or less or at 0.1 wt% or less.As used herein,Mnis number average molecular weight,Mwis weight average molecular weight, andMzis z average molecular weight.Molecular weight distribution(MWD), also referred to aspolydispersity index(PDI), is defined to be Mw divided by Mn. Unless otherwise noted, all molecular weight units (e.g., Mw, Mn, Mz) are reported in g / mol. When used in context of functionalized polymers (such as dispersants, functionalized styrenic polymers, etc.), the molecular weights are typically reported in terms of the base polymer prior to modification. For example PIBSA-PAM dispersant molecular weights are typically reported for the base polyisobutylene polymer prior to functionalization with the acylating agent (maleic acid or anhydride) and functional group (such as polyamine).Total Base Number,also referred to as "TBN," in relation to an additive component or of a lubricating oil composition (i.e., unused lubricating oil composition) means total base number as measured by ASTM D2896 and reported in units of mgKOH / g. “High TBN” is considered to be greater than or equal to 200 KOH / g, or 300 to 500 mgKOH / g. “Low TBN” is considered less than 200 KOH / g, or less than 100 KOH / g.Total Acid Number("TAN") is determined by ASTM D664.Phosphorus, Boron, Calcium, Zinc, Molybdenum, Sodium, Silicon,andMagnesiumcontent are measured by ASTM D5185.Sulfur content in oilformulations is measured by ASTM D5185.Sulfated ash("SASH") content is measured by ASTM D874.Kinematic viscosity(KV100, KV40) is determined pursuant to ASTM D445-19a and reported in units of cSt, unless otherwise specified.Viscosity indexis determined according to ASTM D2270.Saponification numberis determined by ASTM D94, and reported in units of mgKOH / g.The term“functionalized polymer”can refer to a polymer of a functionalized hydrogenated polyisoprene family of polymers for use in lubricating oil compositions, which are disclosed in commonly owned U.S. Provisional Application No. 63 / 379,006, filed October 11, 2022, and also in commonly owned U.S. Provisional Application No. 63 / 584,682, filed on September 22, 2023, Applicant reference no. PF2023L008, both of which are herein incorporated by reference in their entirety and for all purposes.The term “functionalized polymer” can also refer to a functionalized Olefin (Co)Polymer, which can be a homopolymer or a co-polymer of two or more olefin polymers, as described in commonly owned U.S. Provisional Application No. 63 / 584,675, filed September 22, 2023, Applicant reference no. PF2023L007, commonly owned U.S. Provisional Application No. 63 / 478,271, filed January 3, 2023, Applicant reference no. PF2023L002, and also in commonly owned U.S. Provisional Application No. 63 / 379,006, filed October 11, 2022, both of which are herein incorporated by reference in their entirety and for all purposes.For the functionalized polymer family of polymers, Average Functionality [also referred to as Average Functionality Value (Fv)] and Functionality Distribution (Fd) value are determined by Gel Permeation Chromatography using polystyrene standards as described in the Experimental section of USSN 63 / 379,006.An ammonia fueled internal combustion engine (AICE)is an internal combustion engine (mobile or standing) that uses a fuel containing ammonia as the combustion source in a spark ignited, a compression ignited or a combination thereof engine, which can be up to substantially 100 mass % ammonia (which means impurities levels of other components may be present), such as 1 to 100 mass% ammonia, such as 25 to 100 mass% ammonia, such as 50 to 100 mass% ammonia, such as 77 to 100 mass % ammonia based upon the total mass of the fuel.Octane numberis defined as the Research Octane Number plus the Motor Octane Number divided by two (i.e., (RON+MON) / 2). Research Octane Number is determined by ASTM D2699-21. Motor Octane Number is determined by ASTM D2700-21. Diesel gasolinecetane numberis determined by ASTM D613.Unless otherwise indicated, all percentages reported are mass % on an active ingredient basis,i.e., without regard to carrier or diluent oil.Also, it will be understood that various components used, essential as well as optimal and customary, may react under conditions of formulation, storage or use and that the disclosure also provides the product obtainable or obtained as a result of any such reaction.Further, it is understood that any upper and lower quantity, range and ratio limits set forth herein may be independently combined.Also, it will be understood that the preferred features of each aspect of the present disclosure are regarded as preferred features of every other aspect of the present disclosure. Accordingly, preferred and more preferred features of one aspect of the present disclosure may be independently combined with other preferred and / or more preferred features of the same aspect or different aspects of the present disclosure.DETAILED DESCRIPTIONThe features of the disclosure relating, where appropriate, to each and all aspects of the disclosure, will now be described in more detail as follows.OverviewIt has now surprisingly been found by the present inventors that a lubricating oil composition including a combination of one or more, optionally borated, lower molecular weight PIBSA-PAM dispersants or alternatively a mixture of one or more, optionally borated, lower molecular weight PIBSA-PAM dispersants and one or more, optionally borated, higher molecular weight PIBSA-PAM dispersants, one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, or combinations thereof; and one or more zinc hydrocarbyl diphosphate compounds when used in ammonia fueled internal combustion engines (AICE) and exposed to ammonia combustion contamination byproducts results in improved cleanliness relative to lubrication oil compositions typically used in fossil fueled internal combustion engines.The lubricating oil compositions of the present disclosure comprise components that may or may not remain the same chemically before and after mixing with an oleaginous carrier (such as a base oil) and / or other additives. This disclosure encompasses compositions which comprise the components before mixing, or after mixing, or both before and after mixing.The inventors have unexpectedly and surprisingly discovered that a lubricating oil composition including a combination of one or more, optionally borated, lower molecular weight PIBSA-PAM dispersants or alternatively a mixture of one or more, optionally borated, lower molecular weight PIBSA-PAM dispersants and one or more, optionally borated, higher molecular weight PIBSA-PAM dispersants, one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, or combinations thereof; and one or more zinc hydrocarbyl diphosphate compounds when used in ammonia fueled internal combustion engines (AICE) and exposed to ammonia contamination per the NOx-Ammonia exposure protocol results in a MCT (GFC Lu 27-A-13) cleanliness merit rating change versus a comparable (.e.g., the same) lubricating oil composition not exposed to ammonia contamination of less than or equal to 4.0 merits. The inventors have also unexpectedly and surprisingly discovered that a lubricating oil composition including a combination of one or more, optionally borated, lower molecular weight PIBSA-PAM dispersants or alternatively a mixture of one or more, optionally borated, lower molecular weight PIBSA-PAM dispersants and one or more, optionally borated, higher molecular weight PIBSA-PAM dispersants, one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, or combinations thereof; and one or more zinc hydrocarbyl diphosphate compounds when used in ammonia fueled internal combustion engines (AICE) and exposed to ammonia contamination per the NOx-Ammonia exposure protocol results in an increase in kinematic viscosity (KV100) of less than or equal to 50%.Lubricating Oil Compositions For Ammonia Fueled ICEs and Methods of Use of Such CompositionsThis invention relates to a lubricating oil composition for ammonia fueled internal combustion engines (AICE) comprising or resulting from the admixing of: a) an oil of lubricating viscosity at greater than 50 wt.% of the composition comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof; b) optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more); c) one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), wherein the treat level of the combination of the higher molecular weight PIBSA-PAM and lower molecular weight PIBSA-PAM is from 2.5 to 12.0 wt.% of the composition, wherein the treat level of the lower molecular weight PIBSA-PAM is from 0.1 to 9.0 wt.% of the composition, and wherein the treat level of the higher molecular weight PIBSA-PAM is less than or equal to 3.0 wt.%; and d) one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, or combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; and e) one or more zinc dialkyl dithiophosphate (ZDDP) compounds at from about 0.08 wt.% to about 2.0 wt.% of the lubricating oil composition; wherein the lubricating oil composition has a total sulfated ash of less than or equal to 5.0 wt.%, and a total phosphorous level of less than or equal to 0.120 wt.%, and an overall viscosity of less than or equal to 25 cSt (KV100).This invention also relates to a method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) comprising: i) providing to the ammonia fueled internal combustion engine a lubricating oil composition comprising or resulting from the admixing of: a) an oil of lubricating viscosity at greater than 50 wt.% of the composition comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof; b) optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more); c) one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), wherein the treat level of the combination of the higher molecular weight PIBSA-PAM and lower molecular weight PIBSA-PAM is from 2.5 to 12.0 wt.% of the composition, wherein the treat level of the lower molecular weight PIBSA-PAM is from 0.1 to 9.0 wt.% of the composition, and wherein the treat level of the higher molecular weight PIBSA-PAM is less than or equal to 3.0 wt.%; and d) one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, and combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; and e) one or more zinc dialkyl dithiophosphate (ZDDP) compounds at from about 0.08 wt.% to about 2.0 wt.% of the lubricating oil composition; wherein the lubricating oil composition has a total sulfated ash of less than or equal to 5.0 wt.%, and a total phosphorous level of less than or equal to 0.120 wt.%, and an overall viscosity of less than or equal to 25 cSt (KV100); and ii) providing a fuel comprising ammonia to the ammonia fueled internal combustion engine; and iii) combusting the fuel in the ammonia fueled internal combustion engine.The lubricating oil composition for ammonia fueled internal combustion engines (AICE) provided above may have a total sulfated ash of less than or equal 5.0 wt.%, or less than or equal to 4,0 wt.%, or less than or equal to 3.0 wt.%, or less than or equal to 2.0 wt.%, or less than or equal to 1.0 wt.%, as measured by ASTM D874-13a (2018). The lubricating oil composition for ammonia fueled internal combustion engines (AICE) provided above may have a total phosphorous level of less than or equal to 0.12 wt.%, or less than or equal to 0.10 wt.%, or less than or equal to 0.09 wt.%, or less than or equal to 0.08 wt.%, or less than or equal to 0.07 wt.%, or less than or equal to 0.06 wt.%, or less than or equal to 0.05 wt.%, or less than or equal to 0.04 wt.%, or less than or equal to 0.03 wt.%.Generally, the kinematic viscosity at 100°C (“KV100”) of the inventive lubricating compositions for use in an AICE may range from 5 to 25 cSt, or 6 to 18 cSt, or 8 to 16 cSt, such as 7 to 18 cSt, such as 10 to 15 cSt, or 13 to 16 cSt, or 8 to 17 cSt, as determined according to ASTM D 445-19a. The lubricating composition of the present disclosure may be a monograde oil identified by the viscometric descriptor SAE X, where X represents any one of 20, 30, 40, and 50; the characteristics of the different viscometric grades can be found in the SAE J300 classification. Alternately, the lubricating composition may be a multigrade oil identified by the viscometric descriptor SAE 15W-X, SAE 10W-X, SAE 5W-X or SAE 0W-X, where X represents any one of 8, 12, 16, 20, 30, 40, and 50; the characteristics of the different viscometric grades can be found in the SAE J300 classification.The lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may also upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in a MCT (GFC Lu 27-A-13) cleanliness merit rating change (versus a comparable fresh lubricating oil composition not exposed to ammonia contamination) of less than or equal to 4 merits, or less than or equal to 3 merits, or less than or equal to 2 merits, or less than or equal to 1 merits.The lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may also upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol result in an increase in kinematic viscosity (KV100) of at least 2%, or at least 5%, or at least 7%, or at least 10%, or at least 12%, or at least 15%, or at least 17%, or at least 20%, or less than or to 50%, or less than or to 45%, or less than or to 40%, or less than or to 35%, or less than or to 30% or less than or to 25%.Base Oil(s)The base oil or oil of lubricating viscosity used in the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided may have a KV100 viscosity of less than or equal to 20 cSt, or less than or equal to 15 cSt, or less than or equal to 12 cSt, or less than 10 cSt, or less than 9 cSt, or less than 8 cSt, or less than 7 cSt, or less than 6 cSt, or less than 5 cSt, or less than 4 cSt; and may be included at greater than 50 wt.%, or greater than 60 wt.%, or greater than 70 wt.%, or greater than 80 wt.%, or greater than 90 wt.%, or greater than 95 wt.% of the composition. In another form of the instant disclosure, the oil of lubricating viscosity constitutes from 60 wt.% to 95 wt.%, or 70 to 90 wt.%, or 75 to 85 wt.% of the composition, and comprises a Group I base oil and / or a Group II base oil, and is substantially free of Group III base oil, Group IV base oil, or the combination of Group II and Group IV base oil.The lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above of the instant disclosure may have a total sulfated ash of less than or equal to 1.0 wt.%, a kinematic viscosity at 100oC of 5 to 20 cSt, a total phosphorous level of less than or equal to 0.12 wt.%, and a total sulfur level of less than or equal to 0.4 wt.%, or less than or equal to 0.35 wt%, or less than or equal to 0.30 wt%, or less than or equal to 0.25 wt%, or less than or equal to 0.20 wt%.The lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include a Group V base oil as part of the oil of lubricating viscosity, wherein the Group V based oil is included in the lubricating oil composition at from 0.1 to 50 wt.%, or 0.5 to 40 wt.%, or 1.0 to 20 wt.% or 2.0 to 10 wt.%, or 3.0 to 5 wt.% of the overall composition.In another embodiment, the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include a base oil comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, a Group V base oil or combinations thereof, wherein the base oil is included at greater than 60 wt.%, or greater than 70 wt.%, or greater than 80 wt.%, or greater than 90 wt.%, or greater than 95 wt.% of the composition.In another embodiment, the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include a base oil comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof, wherein the base oil is included at greater than 60 wt.%, or greater than 70 wt.%, or greater than 80 wt.%, or greater than 90 wt.%, or greater than 95 wt.% of the composition. That is the base oil is substantially free of Group V base oil.In yet another embodiment, the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include a base oil comprising a Group I base oil, a Group II base oil, a Group III base oil, or combinations thereof, wherein the base oil is included at greater than 60 wt.%, or greater than 70 wt.%, or greater than 80 wt.%, or greater than 90 wt.%, or greater than 95 wt.% of the composition. That is the base oil is substantially free of both Group V base oil and Group IV base oil.In still yet another embodiment, the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include a base oil comprising a Group I base oil, a Group II base oil, or combinations thereof, wherein the base oil is included at greater than 60 wt.%, or greater than 70 wt.%, or greater than 80 wt.%, or greater than 90 wt.%, or greater than 95 wt.% of the composition. That is the base oil is substantially free of both Group V base oil and Group IV base oil, as well as Group III base oil.DispersantsThe lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) optionally includes one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more), and also includes one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), wherein the treat level of the combination of the higher molecular weight PIBSA-PAM and lower molecular weight PIBSA-PAM is from 2.5 to 12.0 wt.% of the composition, wherein the treat level of the lower molecular weight PIBSA-PAM is from 0.1 to 9.0 wt.% of the composition, and wherein the treat level of the higher molecular weight PIBSA-PAM is less than or equal to 3.0 wt.%. Hence, the inventive lubricating oil compositions including the optional higher molecular weight PIBSA-PAM in a borated form, the lower molecular weight PIBSA-PAM in a borated or a combination thereof, are included at a treat level to deliver from 20 to 1000 ppm, or 50 to 800 ppm, or 100 to 600 ppm, or 200 to 400 ppm, or 50 to 300 ppm by weight of boron to the composition. With regard to the treat level of the combination of the one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more), and one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), it may range from 2.5 to 12.0 wt%, or 2.6 to 10.0 wt.%, or 2.8 to 9.0 wt.%, or 3.0 to 8.0 wt.%, or 4.0 to 7.0 wt.%, or 5.0 to 6.0 wt.% of the composition. The treat level of the lower molecular weight PIBSA-PAM in the composition may range from 0.1 to 9.0 wt.%, or 0.5 to 8.0 wt.%, or 1.0 to 7.0 wt.%, or 1.5 to 6.0 wt.%, or 2.0 to 6.0 wt.%, or 2.0 to 5.0 wt.%, or 3.0 to 4.0 wt.%, or 1.0 to 4.0 wt.% of the composition. The treat level of the higher molecular weight PIBSA-PAM in the composition is less than or equal to 3.0 wt.%, or less than or equal to 2.8 wt.%, or less than or equal to 2.6 wt.%, or less than or equal to 2.4 wt.%, or less than or equal to 2.2 wt.%, or less than or equal to 2.0 wt.%, or less than or equal to 1.8 wt.%, or less than or equal to 1.6 wt.%, or less than or equal to 1.4 wt.%, or less than or equal to 1.2 wt.%, or less than or equal to 1.0 wt.%, or less than or equal to 0.8 wt.%, or less than or equal to 0.6 wt.%, or less than or equal to 0.4 wt.%.Zinc Dialkyl Dithiophosphate (ZDDP)The lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided includes one or more zinc dialkyl dithiophosphate (ZDDP) compounds. The one or more zinc hydrocarbyl diphosphate compounds may provide more than 0.01 wt.% zinc, and less than or equal to 0.12 wt.% of phosphorus, based upon the weight of the lubricating oil composition. The ZDDP compounds may include a hydrocarbyl group of the zinc hydrocarbyl dithiophosphate which is derived from one or more primary alcohols, one or more secondary alcohols or a combination of primary and secondary alcohols. The one or more ZDDP compounds may be included in the lubricating oil at a treat level of from about 0.08 wt.% to about 2.0 wt, or 0.1 to 1.7 wt.%, or 0.6 to 1.5 wt.%, or 0.7 to 1.2 wt.%, or 0.8 to 1.0 wt% of the lubricating oil composition. In one advantageous form, the one or more zinc dialkyldithiophosphates (ZDDP) include greater than or equal to 85 wt.% secondary alcohols and less than or equal to 15 wt.% primary alcohols.DetergentsWith regard to the one or more overbased detergents of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE), they may be selected from a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, or combinations thereof. The one or more overbased detergents may have a Total Base Number (mgKOH / g) greater than or equal to 9 and less than or equal to 500, or alternatively 50 to 450, or alternatively 100 to 400, or 150 to 400, or 200 to 350, or 250 to 300 (mgKOH / g). In another form, the one or more overbased detergents may have a TBN of 100 mgKOH / g or more (such as 200 mgKOH / g or more), and typically will have a TBN of 250 mgKOH / g or more, such as 300 mgKOH / g or more, such as from 200 to 500 mgKOH / g, 225 to 450 mgKOH / g, 250 to 400 mgKOH / g, or 300 to 350 mgKOH / g. The one or more overbased detergents may be included in the lubricating oil composition at a treat level to deliver at least 5 mmol of total soap, or at least 10 mmol of total soap, or at least 15 mmol of total soap, or at least 20 mmol of total soap, or at least 30 mmol of total soap, or at least 50 mmol of total soap, or at least 70 mmol of total soap, or at least 90 mmol of total soap, or 100 mmol to total soap to the lubricating oil composition.With regard to the one or more overbased detergents of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE), the metal of the one or more overbased metal detergents may be sodium, potassium, lithium, calcium, magnesium or combinations thereof. One particularly advantageous metal is calcium. In one advantageous form, the one or more overbased detergents of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE), may include a mixture of a calcium salicylate detergent and calcium sulfonate detergent that delivers to the composition a total soap of at least 10 mmol.Optional Functionalized Polymer ComponentThe lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include as part of the lubricating oil one or more functionalized polymers, wherein the functionalized polymer may be a functionalized-hydrogenated PolyIsoPrene (F-H-PI) polymer, a functionalized-Olefin polymer or copolymer (f-OCP) or a combination of a functionalized-hydrogenated PolyIsoPrene (F-H-PI) polymer and a functionalized-Olefin polymer or copolymer (f-OCP).The lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include as part of the lubricating oil one or more functionalized polymers, wherein the functionalized polymer may be a functionalized-hydrogenated PolyIsoPrene (F-H-PI) polymer, a functionalized-Olefin polymer or copolymer (f-OCP) or a combination of a functionalized-hydrogenated PolyIsoPrene (F-H-PI) polymer and a functionalized-Olefin polymer or copolymer (f-OCP).As described above, the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include a functionalized polymer at from 0.1 to 20 wt.%, or 0.2 to 20 wt.%, or 0.2 to 6 wt.%, or 0.2 to 2.0 wt.%, or 0.4 to 1.8 wt.%, or 0.6 to 1.6 wt.%, or 0.8 to 1.4 wt.%, or 1.0 to 1.2 wt.% or 0.3 to 5 wt.%, or 0.4 to 3 wt.%, or 0.5 to 2.0 wt.%, or 0.5 to 1.0 wt.%, or 0.7 to 0.9 wt.% of the composition, wherein the functionalized polymer comprises a partially or fully saturated olefin homopolymer or copolymer backbone and at least one functional group, having:an Mn of 10,000 g / mol or more (GPC-PS) of the polymer prior to functionalization,where the functional group is derived from an acylating agent and a compound containing amino and / or hydroxyl groups (including but not limited to where the polymer is functionalized with an acylating agent and subsequently reacted with a compound containing amino and / or hydroxyl groups), and,wherein the homopolymer or copolymer backbone is derived from monomers selected from the group consisting of C2to C30linear alpha olefins, and C4to C20conjugated dienes.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the functionalized polymer is at from 0.3 to 5 wt.% based upon the total weight of the lubricating oil composition, and the functionalized polymer comprises an amide, imide, and / or ester functionalized partially or fully saturated polymer comprising C4-5olefins having:i) an Mw / Mn of less than 2,ii) a Functionality Distribution (Fd) value of 3.5 or less, andiii) an Mn of 10,000 g / mol or more (GPC-PS) of the polymer prior to functionalization,provided that, if the polymer prior to functionalization is a copolymer of isoprene and butadiene, then the Mn of the copolymer is greater than 25,000 g / mol (GPC-PS).In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include a polymer backbone derived from one or more of ethylene, propylene, butene, butadiene, isoprene, styrene, decene, and or dodecene.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the homopolymer or copolymer backbone is derived from monomers selected from the group consisting of C2to C12linear alpha olefins and C4to C12conjugated dienes.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the polymer backbone is a copolymer of isoprene and butadiene.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the polymer backbone prior to functionalization comprises at least 90% isoprene repeat units, or at least 93% isoprene repeat units, or at least 96% isoprene repeat units, or at least 99% isoprene repeat units.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the polymer backbone is homo-polyisoprene, or an ethylene-propylene copolymer.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the polymer backbone comprises repeat units of one or more polar monomers.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the one or more polar monomers are selected from the group consisting of fumarates, acrylates, maleates, methacrylates, acrylamides, acrylonitriles and combinations thereof.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the polymer prior to functionalization has an Mn of 10,000 g / mol up to 100,000 g / mol (GPC-PS), or an Mn of 20,000 g / mol up to 80,000 g / mol (GPC-PS), or an Mn of 40,000 g / mol up to 80,000 g / mol (GPC-PS).In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the polymer prior to functionalization has an Mn of at least 25,000 g / mol (GPC-PS), or Mn of at least 45,000 g / mol (GPC-PS), or Mn of at least 65,000 g / mol (GPC-PS), or Mn of at least 85,000 g / mol (GPC-PS).In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein if the polymer prior to functionalization is a copolymer of isoprene and butadiene, the Mn of the copolymer is greater than 25,000 g / mol (GPC-PS), or greater than 45,000 g / mol (GPC-PS), or greater than 65,000 g / mol (GPC-PS), or greater than 85,000 g / mol (GPC-PS).In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the polymer backbone comprises at least about 50% %, or at least 60%, or at least 70% of 1,4 insertions of monomer.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the acylating agent is maleic anhydride, itaconic anhydride, or an unsaturated carboxylic acid such as maleic acid, fumaric acid, cinnamic acid, or a corresponding ester.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the functional group is selected from an amide, imide, or ester.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the compound with which the acylated polymer backbone is reacted is a monoamine or a polyamine.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the acylated polymer backbone is reacted with one or more amines selected from the group consisting of: polyhydrocarbyl polyamines, polyalkylene polyamines, hydroxy-substituted polyamines, polyoxyalkylene polyamines, and combinations thereof.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the acylated polymer backbone is reacted with N-phenyl-p-phenylenediamine.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the acylated polymer backbone is reacted with one or more hydroxy-substituted polyamine selected from the group consisting of: N-hydroxyalkyl-alkylene polyamines such as N-(2-hydroxyethyl)ethylene diamine, N-(2-hydroxyethyl)piperazine, and / or N-hydroxyalkylated alkylene diamines; or with one or more polyoxyalkylene polyamines of the group consisting of: polyoxyethylene and / or polyoxypropylene diamines.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the compound with which the acylated polymer backbone is reacted is a hydroxyl-group containing compound.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the functionalized polymer has a Functionality Distribution (Fd) value of 3.5 or less, or 3.0 or less, or 2.5 or less, or 2.0 or less.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the functionalized polymer has an average functionality (Fv) of 1.4 to 20, or 2.0 to 18, or 4.0 to 16, or 6.0 to 14, or 8.0 to 12 functional group grafts / polymer chain.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the functionalized polymer has a molecular weight distribution (Mw / Mn) of less than 2, or less than 1.8, or less than 1.6, or less than 1.4, or less than 1.2.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the functionalized polymer is an amide or imide functionalized partially or fully saturated homo-polyisoprene having:(i) an Mw / Mn of less than 2,(ii) a Functionality Distribution (Fd) value of 3.5 or less, and(iii) an Mn of 10,000 g / mol or more (GPC-PS) of the polymer prior to functionalization.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the functionalized polymer is an amide or imide functionalized partially or fully saturated homo-polyisoprene having:(i) an Mw / Mn of less than 1.8,(ii) a Functionality Distribution (Fd) value of 2.5 or less,(iii) an average functionality (Fv) of 4 to 10 functional group grafts / polymer chain, and(iv) an Mn of from 20,000 g / mol to 50,000 g / mol (GPC-PS) of the polymer prior to functionalization.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the functionalized polymer is derived from a homo-polyisoprene that has been acylated with maleic anhydride or maleic acid and further reacted with an N-phenylphenylene diamine.In another embodiment, the functionalized polymer described above of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include wherein the functionalized polymer is derived from an ethylene-propylene copolymer that has been acylated with maleic anhydride or maleic acid and further reacted with an N-phenylphenylene diamine.In yet another embodiment, the functionalized polymer of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include at least 50 %, or at least 60%, or at least 70% of 1,4-insertions of monomer. Furthermore, the functionalized polymer of the lubricating oil composition of the instant disclosure may include a partially or fully saturated homopolyisoprene containing one or more pendant amine groups and having an Mn of 25,000 to 100,000 g / mol, or 35,000 to 90,000 g / mol, or 45,000 to 80,000 g / mol, or 55,000 to 75,000 g / mol (GPC-PS) and at least 50%, or at least 60%, or at least 70% of 1,4-insertions prior to functionalization.In yet another embodiment, the functionalized polymer of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively be absent of styrene repeat units, or absent of butadiene repeat units, or is not a homo-polyisobutylene, or is not a copolymer of isoprene and butadiene.In yet another embodiment, the functionalized polymer of the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively also include a non-ionic fatty alcohol ethoxylate at from 1.0 to 20 wt.%, or 3.0 to 18.0 wt.%, or 5.0 to 15.0 wt%, or 7.0 to 13.0 wt.%, or 8.0 to 10.0 wt.% of the one or more functionalized polymers.Other AdditivesThe lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may optionally include as part of the lubricating oil one or more of the following components: one or more friction modifiers; one or more antioxidants; one or more pour point depressants; one or more anti-foaming agents; one or more viscosity modifiers; one or more dispersants other than the higher molecular weight PIBSA-PAM and the lower molecular weight PIBSA-PAM; one or more inhibitors, one or more antirust agents (rust inhibitors); one or more corrosion inhibitors, one or more seal swell agents; and / or one or more other anti-wear agents.Corrosion Inhibitors / Rust InhibitorsThe lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may alternatively include as part of the lubricating oil one or more corrosion inhibitors, rust inhibitors or combinations thereof at a treat rate of greater than or equal to 0.01 wt.% of the lubricating oil composition. Water is a reaction product of the combustion of a fuel containing ammonia, and therefore corrosion of various internal components of the AICE due to water exposure may be addressed with proper selection of corrosion inhibitor type and treat level in the lubicating oil composition. The corrosion inhibitor or rust inhibitor, may include, but is not limited to, a non-ionic fatty alcohol ethoxylate, a substituted thiadiazole, a substituted benzotriazole, a substituted triazole, a trisubstituted borate, a primary amine, a substituted carboxylic acid functional group, a substituted ester functional group, a substituted anhydride functional group, or a combination thereof. The corrosion inhibitor and / or rust inhibitor may be included in the lubricating oil composition at a treat level of from of 0.01 wt. % to 6.0 wt. %, or 0.05 to 5.0 wt.%, or 0.1 to 4.5 wt.%, or 0.5 to 4.0 wt.%, or 1.0 to 3.5 wt.%, or 1.5 to 3.0 wt.%, or 2.0 to 2.5 wt.% of the lubricating oil composition.The inventive lubricating oil compositions including one or more corrosion inhibitors, rust inhibitors or combinations at the treat levels indicated above provide for less than 5%, or less than 4%, or less than 3%, or less than 2%, or less than 1% corrosion or rust in the ASTM D1748 test for corrosion / rust protection. Additionally, the inventive lubricating oil compositions including one or more corrosion inhibitors, rust inhibitors or combinations at the treat levels indicated above provide for substantially no aqueous separation of lubricating oil emulsions including the lubricating oil composition and up to 10 wt.% water at 0 deg. C and 25 deg. C in the modified ASTM D7563 test.The inventive lubricating oil compositions including one or more corrosion inhibitors, rust inhibitors or combinations at the treat levels indicated above also result in a high temperature corrosion bench test (HTCBT) result of a copper strip rating less than or equal to 3 (a, b), or less than or equal to 2 (a, b, c, d, e), or equal to 1 (a, b) as tested per ASTM D6594.Friction ModifiersThe lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may optionally include as part of the lubricating oil one or more friction modifiers including, but not limited to, dimeric molybdenum dialkyldithiocarbamate (moly dimer), a trimeric molybdenum dialkyldithiocarbamate (moly trimer), or a combination thereof at a treat level to deliver from 12 ppm to 1000 ppm, or 20 ppm to 800 ppm, or 30 ppm to 600 ppm, or 40 to 400 ppm, or 60 to 200 ppm, or 80 to 150 ppm, or 100 to 130 ppm by weight of molybdenum to the composition. In yet another advantageous form, the lubricating oil composition of the instant disclosure is substantially free of molybdenum, which means less than 10 ppm, or less than 5 ppm, or less than 3 ppm, or less than 2 ppm, or less than 1 ppm, based on the overall weight of the lubricating oil composition.AntioxidantsThe lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided above may also include as part of the lubricating oil one or more antioxidants selected from one or more phenolic antioxidants, one or more sulfur based antioxidants, one or more aminic antioxidants or a combination thereof, and wherein the one or more antioxidants comprise from 0.1 to 5.0 wt.%, or 1.0 to 4 wt.%, or 1.5 to 3.5 wt.%, or 2.0 to 3.0 wt.% of the overall lubricating oil composition.Methods of Using Such Compositions in AICEs to Improve Engine CleanlinessThe lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided herein may be used used to improve engine cleanliness as a passenger vehicle lubricant (PVL), a commercial vehicle lubricant (CVL), or a marine engine lubricant by supplying to the engine as a lubricating oil such compositions.As described above, the inventive lubricating oil compositions for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) may upon upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol result in a MCT (GFC Lu 27-A-13) cleanliness merit rating change of less than or equal to 4 merits, or less than or equal to 3 merits, or less than or equal to 2 merits, or less than or equal to 1 merits.The lubricating oil composition for ammonia fueled internal combustion engines (AICE) may be used in conjunction with various ammonia containing fuel sources for combustion in the internal combustion engine. The ammonia containing fuel source may also include other non-ammonia fuel sources including, but not limited to, natural gas, compressed natural gas, propane, mogas (such as gasoline having an octane number of 87 or more, such as 93 more), diesel fuel (such as diesel fuel having a cetane number of 40 or more, such as 50 or more), renewable fuel (such as hydrogenated vegetable oil, fatty acid methyl ester, sustainable aviation fuel (SAF), or combinations thereof). The other non-ammonia fuel may be included in the ammonia containing fuel at from 1 to 75 wt.%, or 5 to 70 wt.%, or 10 to 65 wt.%, or 15 to 60 wt.%, or 20 to 55 wt.%, or 25 to 50 wt.%, or 30 to 45 wt.%, or 35 to 40 wt.% of the overall fuel composition. Hence, the fuel supplied to the ammonia fueled engine comprises at least 5 mass% ammonia, such as at least 10 mass% ammonia, such as at least 15 mass% ammonia, such as 20 mass% ammonia, such as at least 25 mass% ammonia, such as at least 30 mass% ammonia, such as at least 35 mass% ammonia, such as at least 40 mass% ammonia, such as at least 45 mass% ammonia, such as at least 50 mass% ammonia, such as at least 55 mass% ammonia, such as at least 60 mass% ammonia, such as at least 70 mass% ammonia, such as at least 75 mass% ammonia, such as at least 80 mass% ammonia, such as at least 85 mass% ammonia, such as at least 90 mass% ammonia, such as at least 95 mass% ammonia, such as at least 99 mass% ammonia, such as 100 mass% ammonia, based upon the mass of the fuel. In a preferred form, the fuel supplied to the ammonia engine comprises substantially 100 mass% ammonia, based upon the mass of the fuel.In other embodiments the fuel supplied to the ammonia fueled engine comprises at least 5 mass% ammonia and less than 95 mass % of non-ammonia fuel (such as hydrocarbon fuel), such as at least 10 mass% ammonia and less than 90 mass % of non-ammonia fuel, such as at least 15 mass% ammonia and less than 85 mass % of non-ammonia fuel, such as 20 mass% ammonia and less than 80 mass % of non-ammonia fuel, such as at least 25 mass% ammonia and less than 75 mass % of non-ammonia fuel, such as at least 30 mass% ammonia and less than 70 mass % of non-ammonia fuel, such as at least 35 mass% ammonia and less than 65 mass % of non-ammonia fuel, such as at least 40 mass% ammonia and less than and less than 60 mass % of non-ammonia fuel, such as at least 45 mass% ammonia and less than 55 mass % of non-ammonia fuel, such as at least 50 mass% ammonia and less than 50 mass % of non-ammonia fuel, such as at least 55 mass% ammonia and less than 45 mass % of non-ammonia fuel, such as at least 60 mass% ammonia and less than 40 mass % of non-ammonia fuel, such as at least 70 mass% ammonia and less than 30 mass % of non-ammonia fuel, such as at least 75 mass% ammonia and less than 25 mass % of non-ammonia fuel, such as at least 80 mass% ammonia and less than 20 mass % of non-ammonia fuel, such as at least 85 mass% ammonia and less than 15 mass % of non-ammonia fuel, such as at least 90 mass% ammonia and less than 10 mass % of non-ammonia fuel, such as at least 95 mass% ammonia and less than 5 mass % of non-ammonia fuel, such as at least 99 mass% ammonia and less than 1 mass % of non-ammonia fuel, based upon the mass of the fuel.The lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided herein may be used such that the fuel comprising ammonia and the lubricating oil composition are combined prior to injection into a combustion chamber of the ammonia fueled internal combustion engine (AICE) to form a fuel composition. Alternatively, the lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided herein may be used such that the fuel comprising ammonia and the lubricating oil composition are combined in the combustion chamber of the ammonia fueled internal combustion engine (AICE) to form a fuel composition.The lubricating oil composition for ammonia fueled internal combustion engines (AICE) and the method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) provided herein may be used in conjunction with a ammonia fueled internal combustion engine (AICE) that is spark ignited, compression ignited, or a combination thereof. The ammonia fueled internal combustion engine may be a heavy duty or light duty internal combustion engine. Alternatively, the ammonia fueled internal combustion engine for use with the method of improving cleanliness in an ammonia fueled internal combustion engine (AICE) during operation of the engine and the lubricating oil composition of the instant disclosure for use in a AICE may be a stationary internal combustion engine or a marine engine. In a particularly preferred form, the lubricating oil composition of the instant disclosure for use in a AICE is used in marine engines. The ammonia fueled internal combustion engine (AICE) may optionally include a turbocharger or a supercharger prior to the ammonia fueled internal combustion engine.This invention also relates to the use of the lubricating oil composition described herein, to lubricate an ammonia fueled internal combustion engine where the fuel provided to the ammonia fueled internal combustion engine comprises:a) 1 to 100 mass % of ammonia,b) 0 to 99 mass % of a petroleum derived fuel, and / orc) from 0 to 99 mass %, or 0.1 to 98.9 mass %, or 1 to 75 mass %, or 5 to 50 mass %, of a renewable fuel other than ammonia, based upon the total mass of ammonia fuel, renewable fuel and the petroleum derived fuel.In embodiments, the fuel comprising ammonia and the lubricating oil composition are combined in the combustion chamber to form a fuel composition, alternately the fuel comprising ammonia and the lubricating oil composition are combined prior to injection into the combustion chamber to form a fuel composition.The ammonia fueled internal combustion engines described herein may be retrofitted engines, or engines designed for moving vehicles (such as automobiles, trucks, generators, marine vessels, etc.), stationary engines, such as heavy duty internal combustion engines or standing generators comprising internal combustion engines.In embodiments, the lubricating compositions disclosed herein may be used in heavy-duty engines (e.g., heavy-duty vehicles having a gross vehicle weight rating of 10,000 pounds or more).In embodiments, the lubricating compositions disclosed herein may be used as passenger car motor oil.In embodiments, the lubricating compositions disclosed herein may be used in a passenger car or heavy duty vehicle where the ammonia fueled internal combustion engine is a passenger car or heavy duty vehicle internal combustion engine (optionally also using gasoline, natural gas, propane and / or diesel fuel).In embodiments, the lubricating compositions disclosed herein may be for use in a heavy duty internal combustion engines or stationary internal combustion engines.Methods of Evaluating Lubricants for Ranking Performance In an AICEAlso disclosed herein is a method of evaluating a lubricating oil composition for ranking the performance of the lubricating oil composition in an ammonia fueled internal combustion engine (AICE). The method includes the steps of: i) selecting a fresh lubricating oil composition for bench scale testing; ii) ) testing the fresh lubricating oil composition for MCT (GFC Lu 27-A-13) cleanliness rating, nitrogen content as measured by ASTM test method D5762, and kinematic viscosity at 100 deg. C; iii) aging the fresh lubricating oil composition oil under an NOx exposure protocol to create a NOx aged oil; iv) optionally testing the NOx aged oil for MCT (GFC Lu 27-A-13) cleanliness rating, nitrogen content as measured by ASTM test method D5762, and kinematic viscosity at 100 deg. C; v) aging the NOx aged oil under an ammonia exposure protocol to create an ammonia aged oil; vi) testing the ammonia aged oil for MCT (GFC Lu 27-A-13) cleanliness rating, nitrogen content as measured by ASTM test method D5762, and kinematic viscosity at 100 deg. C; and vii) combining test results from steps ii) and vi) above to provide an overall performance rating for ranking the performance of the lubricating oil composition in an ammonia fueled internal combustion engine. The “NOx-Ammonia exposure protocol” is defined herein as the combination of steps iii), and v) above.ConcentratesA concentrate, also referred to as an additive package, adpak, or addpack, is a composition having less than 50 mass % (such as from 1 to 40 mass %, such as from 2 to 30 mass %, such as 3 to 25 mass %, such as 4 to 20 mass %, such as 5 to 15 mass%) base oil and lubricant composition additives (such as described herein) which is typically then further blended with additional Group I, II, III and / or Group IV base oil to form a lubricating oil product. The concentrate typically is absent Group IV base oil, such as polyalphaolefin, having a viscosity index of 100 or more, such as 120 or more, such as 140 or more as determined by ASTM D2270. Alternately the concentrate contains Group IV base oil, such as polyalphaolefin, having a viscosity index of 100 or more, such as 120 or more, such as 140 or more as determined by ASTM D2270 in amounts that the total concentration of the PAO in the final lubrication oil composition is less 70 mass% or less, such as 60 mass% or less, 50 mass% or less, such as 40 mass% or less, 30 mass% or less, such as 20 mass% or less, 10 mass% or less, such as 5 mass% or less, based upon the weight of the lubricating oil composition.This disclosure also relates to concentrate compositions comprising or resulting from the admixing of: from 1 to less than or equal to 50 wt.% of one or more base oils; from 2 to 40 wt.% of one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate and combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; from 2 to 40 wt.% of optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more), and one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), and from 2 to 20 wt.% of one or more zinc hydrocarbyl diphosphate compounds, wherein the one or more zinc hydrocarbyl diphosphate compounds include hydrocarbyl groups derived from one or more primary alcohols, one or more secondary alcohols or a combination of primary and secondary alcohols.Alternatively, the concentrate compositions disclosed herein include from 0.10 to 10 wt.% of one or more corrosion inhibitors, rust inhibitors or combinations thereof selected from the group consisting of a non-ionic fatty alcohol ethoxylate, a substituted thiadiazole, a substituted benzotriazole, a substituted triazole, a trisubstituted borate, a primary amine, a substituted carboxylic acid functional group, a substituted ester functional group, a substituted anhydride functional group and combinations thereof.Alternatively, the concentrate compositions disclosed herein include the one or more functionalized polymers and more particularly, comprising from 1 to 30 wt.%, such as 2 to 20 wt.%, based upon the weight of the concentrate, of one or more functionalized polymers, wherein the one or more functionalized polymers comprise a partially or fully saturated olefin homopolymer or copolymer backbone and at least one functional group, having: i) an Mn of 10,000 g / mol or more (GPC-PS) of the polymer prior to functionalization, ii)where the functional group is derived from an acylating agent and a compound containing amino and / or hydroxyl groups (including but not limited to where the polymer is functionalized with an acylating agent and subsequently reacted with a compound containing amino and / or hydroxyl groups), and, iii) wherein the homopolymer or copolymer backbone is derived from monomers selected from the group consisting of C2 to C30 linear alpha olefins, and C4 to C20 conjugated dienes.The concentrate compositions disclosed herein may further comprise combining the concentrate with a base oil to form a lubricating oil composition comprising: a) an oil of lubricating viscosity at greater than 50 wt.% of the composition comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof; b) optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more); c) one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), wherein the treat level of the combination of the higher molecular weight PIBSA-PAM and lower molecular weight PIBSA-PAM is from 2.5 to 12.0 wt.% of the composition, and wherein the treat level of the lower molecular weight PIBSA-PAM is from 0.1 to 9.0 wt.% of the composition; and d) one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, and combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; and e) one or more zinc dialkyl dithiophosphate (ZDDP) compounds at from about 0.08 wt.% to about 2.0 wt.% of the lubricating oil composition. The resulting lubricating oil composition may have a total sulfated ash of less than or equal to 5.0 wt.%, and a total phosphorous level of less than or equal to 0.120 wt.%, and an overall viscosity of less than or equal to 25 cSt (KV100). Moreover, the lubricating oil composition upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in a MCT (GFC Lu 27-A-13) cleanliness merit rating change (versus a comparable (such as the same) fresh lubricating oil composition (not exposed to ammonia contamination)) of less than, or equal to, 4.0 merits.Concentrates may be present in the lubricating oil compositions of the instant disclosure at from of 0.5 mass% to 35 mass%, such as 5 mass% to 30 mass%, such as 7.5 mass% to 25 mass%, such as 10 to 22.5 mass%, such as 15 to 20 mass%, such as 12 to 20 mass% based upon the mass of the lubricating oil composition.Optionally, the concentrate may be absent functionalized oil.In embodiments, the concentrate composition may optionally be absent solvent (such as aliphatic or aromatic solvent) and / or absent functionalized base oil.Optionally, the concentrate may be absent phenolic antioxidant.In embodiments, the concentrate may be substantially free of or absent aminic antioxidant, such as diphenylamine, such as di (nonylphenyl) amine.In embodiments, the concentrate may comprise from 200 to 2000 ppm, or 500 to 1500 ppm, or 1000 to 1300 ppm boron. Alternately, the concentrate may be absent boron.In embodiments, the concentrate may comprise less than or equal to 20 (such as 15, such as 10, such as 5, such as 3, such as 1) mass %, functionalized (such as aminated) polybutene (such as polyisobutylene), such as PIBSA-PAM.In embodiments, the concentrate may comprise acylated polymers, such as polyisobutylene succinic acid, optionally, having an Mn of 500 to 50,000 g / mol, such as 600 to 5,000 g / mol, such as 700 to 3000 g / mol. In embodiments, the concentrate may comprise acylated polymers, such as polyisobutylene succinic acid, having an Mn of 500 1600 g / mol, such as 700 to 1200 g / mol.In embodiments, the concentrate may comprise 20 (such as 15, such as 10, such as 5, such as 3, such as 1) mass % or less block copolymer, such as block, star, random, and / or tapered block copolymer.In embodiments, the concentrate may be substantially free of or absent block copolymer, such as block, star, random, and / or tapered block copolymer.In embodiments, the concentrate may comprise 20 mass % or less (such as 15 mass % or less, such as 10 mass % or less, such as 5 mass % or less, such as 3 mass % or less, such as 1) mass % or less styrenic copolymer, such as block, star, random, and / or tapered styrenic block copolymer).In embodiments, the concentrate may be substantially free of or absent styrenic copolymer, such as block, star, random, and / or tapered sytrenic block copolymer).In embodiments, the concentrate may comprise less than 20 (such as less than 15, such as 10, such as less than 5, such as less than 3, such as 1) mass % of functionalized diluent, such as functionalized oil.In embodiments, the concentrate may substantially free of or absent functionalized diluent, such as functionalized oil.In embodiments, the concentrate may comprise less than 0.5 (such as less than 0.4, such as less than 0.3, such as less than 0.2, such as 0.1, substantially absent) wt %, based upon the weight of the concentrate, of secondary hydrocarbyl amine compounds and tertiary hydrocarbyl amine compounds.In embodiments, the concentrate may be substantially absent, or may comprise no secondary hydrocarbyl amine compounds and tertiary hydrocarbyl amine compounds.In embodiments, the concentrate may have a kinematic viscosity at 100°C of less than 1000 cSt, such as less than 500 cSt, such as less than 200 cSt.In embodiments, the concentrate including the one or more of the functionalized polymers may further include a non-ionic fatty alcohol ethoxylate at from 1.0 to 20 wt.% of the one or more functionalized polymers.This disclosure also relates to methods of making concentrate compositions comprising combining: from 1 to less than or equal to 50 wt.% of one or more base oils; from 2 to 40 wt.% of one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate and combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; from 2 to 40 wt.% of optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more), and one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), and from 2 to 20 wt.% of one or more zinc hydrocarbyl diphosphate compounds, wherein the one or more zinc hydrocarbyl diphosphate compounds include hydrocarbyl groups derived from one or more primary alcohols, one or more secondary alcohols or a combination of primary and secondary alcohols.Lubricating Oil Composition Components and Concentrate ComponentsA. Base Oil ComponentThe base oil (also referred to as “base stock,” “lubricating oil basestock,” or “oil of lubricating viscosity”) used herein may be a single oil or a blend of oils, and is typically a large liquid constituent of a lubricating composition, also referred to as a lubricant, into which additives and optional additional oils are blended, for example, to produce a lubricating composition, such as a final lubricant composition, a concentrate, or other lubricating composition.A base oil may be selected from vegetable, animal, mineral, and synthetic lubricating oils, and mixtures thereof. It may range in viscosity from light distillate mineral oils to heavy lubricating oils, such as those for gas engine oil, mineral lubricating oil, motor vehicle oil, and heavy-duty diesel oil. Generally, the kinematic viscosity at 100° C (“KV100”) of the base oil ranges from 1 to 30, such as 2 to 25 cSt, such as 5 to 20 cSt, as determined according to ASTM D445-19a, in particular, from 1.0 cSt to 10 cSt, from 1.5 cSt to 3.3 cSt, from 2.7 cSt to 8.1 cSt, from 3.0 cSt to 7.2 cSt, or from 2.5 cSt to 6.5 cSt. Generally, the high temperature high shear (HTHS) viscosity at 150° C of the base oil ranges from 0.5 to 20 cP such as 1 to 10 cP, such as 2 to 5 cP as determined according to ASTM D4683-20.Typically, when lubricating oil basestock(s) is used to make a concentrate, it may advantageously be present in a concentrate-forming amount to give a concentrate containing, from 5 wt % to 80 wt %, from 10 wt % to 70 wt %, or from 5 wt % to 50 wt % of active ingredient, based upon the weight of the concentrate.Common oils useful as base oils include animal and vegetable oils (e.g., castor and lard oil), liquid petroleum oils, and hydrorefined and / or solvent-treated mineral lubricating oils of the paraffinic, naphthenic, and mixed paraffinic-naphthenic types. Oils derived from coal or shale are also useful base oils. Base stocks may be manufactured using a variety of different processes including, but not limited to, distillation, solvent refining, hydrogen processing, oligomerization, esterification, and re-refining.Synthetic lubricating oils useful herein as base oils include hydrocarbon oils such as homopolymerized and copolymerized olefins, referred to as polyalphaolefins or PAO’s or group IV base oils [according to the API EOLCS 1509 definition (American Petroleum Institute Publication 1509, see section E.1.3, 22nd edition, October 2023, www.API.org)]. Examples of PAO’s useful as base oils include: poly(ethylenes), copolymers of ethylene and propylene, polybutylenes, polypropylenes, propylene-isobutylene copolymers, chlorinated polybutylenes, poly(1-hexenes), poly(1-octenes), poly(1-decenes), homo- or co-polymers of C8to C20alkenes, homo- or co-polymers of C8, and / or C10, and / or C12alkenes, C8 / C10copolymers, C8 / C10 / C12copolymers, and C10 / C12copolymers, and the derivatives, analogues and homologues thereof.In another embodiment, the base oil may comprise polyalphaolefins comprising oligomers of linear olefins having 6 to 14 carbon atoms, more preferably 8 to 12 carbon atoms, more preferably 10 carbon atoms having a Kinematic viscosity at 100° C of 10 or more (as measured by ASTM D445); and preferably having a viscosity index (“VI”), as determined by ASTM D2270, of 100 or more, preferably 110 or more, more preferably 120 or more, more preferably 130 or more, more preferably 140 or more; and / or having a pour point of -5° C or less (as determined by ASTM D97), more preferably -10° C or less, more preferably -20° C or less.In another embodiment polyalphaolefin oligomers useful in the present disclosure may comprise C20to C1500paraffins, preferably C40to C1000paraffins, preferably C50to C750paraffins, preferably C50to C500paraffins. The PAO oligomers are dimers, trimers, tetramers, pentamers,etc., of C5to C14alpha-olefins in one embodiment, and C6to C12alpha-olefins in another embodiment, and C8to C12alpha-olefins in another embodiment. Suitable olefins include 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-undecene, and 1-dodecene. In one embodiment, the olefin is a combination of 1-octene, 1-decene, and 1-dodecene, or alternately may be substantially 1-decene, and the PAO is a mixture of dimers, trimers, tetramers, and pentamers (and higher) thereof. Useful PAO’s are described more particularly in, for example, US Patent Nos. 5,171,908 and 5,783,531, and in Synthetic Lubricants and High-Performance Functional Fluids 1-52 (Leslie R. Rudnick & Ronald L. Shubkin, ed. Marcel Dekker, Inc. 1999).PAO’s useful in the present disclosure typically possess a number average molecular weight of from 100 to 21,000 g / mol in one embodiment, and from 200 to 10,000 g / mol in another embodiment, and from 200 to 7,000 g / mol in yet another embodiment, and from 200 to 2,000 g / mol in yet another embodiment, and from 200 to 500 g / mol in yet another embodiment. Desirable PAO’s are commercially available as SpectraSyn™ Hi-Vis, SpectraSyn™ Low-Vis, SpectraSyn™ plus, SpectraSyn™ Elite PAO’s (ExxonMobil Chemical Company, Houston Texas) and Durasyn PAO’s from Ineos Oligomers USA LLC.The various base oils are often categorized as Group I, II, III, IV, or V according to the API EOLCS 1509 definition (American Petroleum Institute Publication 1509, see section E.1.3, 22nd edition, October 2023, www.API.org). Generally speaking, Group I base stocks have a viscosity index of between about 80 to 120 and contain greater than about 0.03 % sulfur and / or less than about 90 % saturates. Group II base stocks have a viscosity index of between about 80 to 120 and contain less than or equal to about 0.03 % sulfur and greater than or equal to about 90 % saturates. Group III base stocks have a viscosity index greater than about 120 and contain less than or equal to about 0.03 % sulfur and greater than about 90 % saturates. Group IV base stocks include polyalphaolefins (PAO). Group V base stocks include base stocks not included in Groups I-IV. (Viscosity index measured by ASTM D 2270, saturates is measured by ASTM D2007, and sulfur is measured by ASTM D5185, ASTM D2622, ASTM D4294, ASTM D4927, and ASTM D3120).Base oils for use in the formulated lubricating compositions useful in the present disclosure are any one, two, three, or more of the variety of oils described herein. In desirable embodiments, base oils for use in the formulated lubricating compositions useful in the present disclosure are those described as API Group I(including Group I+), Group II (including Group II+), Group III (including Group III+), Group IV, and Group V oils and mixtures thereof, preferably API Group II, Group III, Group IV, and Group V oils and mixtures thereof. The base oil may be a Group III, Group III+, IV, and Group V base oils due to their exceptional volatility, stability, viscometric, and cleanliness features. Minor quantities of Group I basestock, such as the amount used to dilute additives for blending into formulated lube oil products, can be tolerated but are typically kept to a minimum,e.g., amounts only associated with their use as diluent / carrier oil for additives used on an “as-received” basis. In regard to the Group II stocks, it is often more useful that the Group II base stock be in the higher quality range associated with that stock,i.e., a Group II stock having a viscosity index in the range from 100 to 120.The base oil useful herein may be selected from any of the synthetic, natural, or re-refined oils (such as those typically used as crankcase lubricating oils for spark-ignited and compression-ignited engines). Mixtures of synthetic and / or natural and / or re-refined base oils may be used if desired. Multi-modal mixtures (such as bi- or tri-modal mixtures) of Group I, II, III, IV, and / or V base stocks may be used if desired.The base oil or base oil blend used herein conveniently has a kinematic viscosity at 100° C (KV100, as measured according to ASTM D445-19a, and reported in units of centistoke (cSt) or it its equivalent, mm2 / s), of about 2 to about 40 cSt, alternately of 3 to 30 cSt, alternately 4 to 20 cSt at 100° C, alternately 5 to 10 cSt, alternately the base oil or base oil blend may have a kinematic viscosity at 100° C of 2 to 20 cSt, of 2.5 to 12 cSt, and preferably of about 2.5 cSt to about 9 cSt.The base oil or base oil blend preferably has a saturate content of at least 65 mass %, more preferably at least 75 mass %, such as at least 85 mass %, such as at least than 90 mass % as determined by ASTM D2007.Preferably, the base oil or base oil blend will have a sulfur content of less than 1 mass %, preferably less than 0.6 mass %, most preferably less than 0.4 mass %, such as less than 0.3 mass %, based on the total mass of the lubricating composition, as measured by ASTM D5185.In embodiments, the volatility of the base oil or base oil blend, as measured by the Noack test (ASTM D5800, procedure B), is less than or equal to 30 mass %, such as less than or equal to 25 mass %, such as less than or equal to 20 mass %, such as less than or equal to 16 mass %, such as less than or equal to 12 mass %, such as less than or equal to 10 mass %, based on the total mass of the lubricating composition.In embodiments, the viscosity index (VI) of the base oil is at least 95, preferably at least 110, more preferably at least 120, even more preferably at least 125, most preferably from about 95 to 145, in particular from about 100 to 135 (as determined by ASTM D2270).The base oil may be provided in a major amount, in combination with a minor amount of one or more additive components as described hereinafter, constituting a lubricant. This preparation may be accomplished by adding the additives directly to the oil or by adding the one or more additives in the form of a concentrate thereof to disperse or dissolve the additive(s). Additives may be added to the oil by any method known to those skilled in the art, either before, at the same time as, or after addition of other additives.The base oil may be provided in a minor amount, in combination with minor amounts of one or more additive components as described hereinafter, constituting an additive concentrate. This preparation may be accomplished by adding the additives directly to the oil or by adding the one or more additives in the form of a solution, slurry or suspension thereof to disperse or dissolve the additive(s) in the oil. Additives may be added to the oil by any method known to those skilled in the art, either before, at the same time as, or after addition of other additives.The base oil typically constitutes the major component of an engine oil lubricant composition of the present disclosure and typically is present in an amount ranging from about 50 to about 99 wt %, preferably from about 60 to about 95 wt %, preferably from about 70 to about 95 wt %, and more preferably from about 80 to about 95 wt %, based on the total weight of the composition.Typically, one or more base oils are present in the lubricating composition in an amount of 32 wt % or more, alternately 55 wt % or more, alternately 60 wt % or more, alternately 65 wt % or more, based on the total weight of the lubricating composition. Typically, one or more base oils are present in the lubricating composition at an amount of 98 wt % or less, more preferably 95 wt % or less, even more preferably 90 wt % or less. Alternately, one or more base oils are present in the lubricating composition at from 1 to 99 mass %, alternately 50 to 97 mass %, alternately to 60 to 95 mass %, alternately 70 to 95 mass %, based upon the weight of the lubricating composition.The base oils and blends thereof described above are also useful for making concentrates as well as for making lubricants therefrom.Concentrates constitute a convenient means of handling additives before their use, as well as facilitating solution or dispersion of additives in lubricants. When preparing a lubricant that contains more than one type of additive (sometime referred to as “additive components”), each additive may be incorporated separately, each in the form of a concentrate. In many instances, however, it is convenient to provide a so-called additive “package” (also referred to as an “addpack”) comprising one or more additives / co-additives, such as described hereinafter, in a single concentrate.Typically, one or more base oils are present in the concentrate composition in an amount of 50 wt % or less, alternately 40 wt % or less, alternately 30 wt % or less, alternately 20 wt % or less, based on the total weight of the concentrate composition. Typically, one or more base oils are present in the concentrate composition at an amount of 0.1 to 49 mass %, alternately 1 to 40 mass %, alternately 5 to 40 mass %, alternately to 10 to 30 mass %, alternately 15 to 25 mass %, based upon the weight of the concentrate composition.In one form of the lubricating oil compositions disclosed herein, the compositions may comprise a Group I, Group II base oil, a Group III base oil, a Group IV base oil (preferably a Group II base oil, a Group III base oil, a Group IV base oil), or combinations thereof. In another form of the lubricating oil compositions disclosed herein, the compositions may comprise a Group II base oil, and is substantially free of the Group III base oil and the Group IV base oil.B. DetergentsThe lubricating oil compositions and concentrate compositions may comprise one or more metal detergents (such as blends of metal detergents) also referred to as a “detergent additive.” Metal detergents typically function both as detergents to reduce or remove deposits and as acid neutralizers or rust inhibitors, thereby reducing wear and corrosion and extending engine life. Detergents generally comprise a polar head with a long hydrophobic tail, with the polar head comprising a metal salt of an acidic organic compound. The salts may contain a substantially stoichiometric amount of the metal in which case they are usually described as normal or neutral salts, and would typically have a total base number (“TBN” as measured by ASTM D2896) of up to 150 mgKOH / g, such as from 0 to 80 (or 5-30) mgKOH / g. A large amount of a metal base may be incorporated by reacting excess metal compound (e.g., an oxide or hydroxide) with an acidic gas (e.g., carbon dioxide). Such detergents, sometimes referred to as overbased, may have a TBN of 100 mgKOH / g or more (such as 200 mgKOH / g or more), and typically will have a TBN of 250 mgKOH / g or more, such as 300 mgKOH / g or more, such as from 200 to 800 mgKOH / g, 225 to 700 mgKOH / g, 250 to 650 mgKOH / g, or 300 to 600 mgKOH / g, such as 150 to 650 mgKOH / g.Suitable detergents include, oil-soluble neutral and overbased sulfonates, phenates, sulfurized phenates, thiophosphonates, salicylates, naphthenates and other oil-soluble carboxylates of a metal, particularly the alkali metals (Group 1 metals,e.g., Li, Na, K, Rb) or alkaline earth metals (Group 2 metals,e.g., Be, Mg, Ca, Sr, Ba), particularly, sodium, potassium, lithium, calcium, and magnesium, such as Ca and / or Mg. Furthermore, the detergent may comprise a hybrid detergent comprising any combination of sodium, potassium, lithium, calcium, or magnesium salts of sulfonates, phenates, sulfurized phenates, thiophosphonates, salicylates, and naphthenates or other oil-soluble carboxylates of a Group 1 and / or 2 metal.Preferably, the detergent additive(s) useful in the present disclosure comprises calcium and / or magnesium metal salts. The detergent may be a calcium and / or magnesium carboxylate (e.g., salicylates), sulfonate, or phenate detergent. More preferably, the detergent additives are selected from magnesium salicylate, calcium salicylate, magnesium sulfonate, calcium sulfonate, magnesium phenate, calcium phenate, and hybrid detergents comprising two, three, four, or more of more of these detergents and / or combinations thereof.The metal-containing detergent may also include “hybrid” detergents formed with mixed surfactant systems including phenate and / or sulfonate components,e.g., phenate / salicylates, sulfonate / phenates, sulfonate / salicylates, sulfonates / phenates / salicylates, as described, for example, in US Patent Nos. 6,429,178; 6,429,179; 6,153,565; and 6,281,179. Where, for example, a hybrid sulfonate / phenate detergent is employed, the hybrid detergent would be considered equivalent to amounts of distinct phenate and sulfonate detergents introducing like amounts of phenate and sulfonate soaps, respectively.The overbased metal-containing detergent may be sodium salts, calcium salts, magnesium salts, or mixtures thereof of the phenates, sulfur-containing phenates, sulfonates, salixarates, and salicylates. Overbased phenates and salicylates typically have a total base number of 180 to 650 mgKOH / g, such as 200 to 450 TBN mgKOH / g. Overbased sulfonates typically have a total base number of 250 to 600 mgKOH / g, or 300 to 500 mgKOH / g. In embodiments, the sulfonate detergent may be predominantly a linear alkylbenzene sulfonate detergent having a metal ratio of at least 8 as is described in paragraphs

[0026] to

[0037] of US Patent Application Publication No. 2005 / 065045 (and granted as US Patent No. 7,407,919). The overbased detergent may be present at 0 wt % to 15 wt %, or 0.1 wt % to 10 wt %, or 0.2 wt % to 8 wt %, or 0.2 wt % to 3 wt %, based upon of the lubricating composition. For example, in a heavy-duty diesel engine, the detergent may be present at 2 wt % to 3 wt % of the lubricating composition. For a passenger car engine, the detergent may be present at 0.2 wt % to 1 wt % of the lubricating composition.The detergent additive(s) may comprise one or more magnesium sulfonate detergents. The magnesium detergent may be a neutral salt or an overbased salt. Suitably the magnesium detergent is an overbased magnesium sulfonate having a TBN of from of from 5 to 700 mgKOH / g (ASTM D2896), or from 7 to 600 mgKOH / g, or from 9 to 500 mgKOH / g, or 80 to 650 mgKOH / g, such as 200 to 500 mgKOH / g, such as 240 to 450 mgKOH / g.Alternately, the detergent additive(s) is a magnesium salicylate. Suitably the magnesium detergent is a magnesium salicylate having TBN of from 5 to 700 mgKOH / g (ASTM D2896), or from 7 to 600 mgKOH / g, or from 9 to 500 mgKOH / g, 30 to 650 mgKOH / g, such as 50 to 500 mgKOH / g, such as 200 to 500 mgKOH / g, such as 240 to 450 mgKOH / g or alternately of 150 mgKOH / g or less, such as 100 mgKOH / g or less.Alternately, the detergent additive(s) is a combination of magnesium salicylate and magnesium sulfonate.The magnesium detergent provides the lubricating composition thereof with from 500-4000 ppm of magnesium atoms, suitably from 700-2000 ppm, from 800 to 1500 or from 1000-1200 ppm of magnesium atoms (ASTM D5185).The detergent composition may comprise (or consist of) a combination of one or more magnesium sulfonate detergents and one or more calcium salicylate detergents.The detergent may comprise one or more calcium detergents such as calcium carboxylate (e.g., salicylate), sulfonate, or phenate detergent.Suitably the calcium detergent has a TBN of from 30 to 1400 mgKOH / g (ASTM D2896), such as 80 to 1200 mgKOH / g, such as 100 to 1000 mgKOH / g, such as 150 to 800 mgKOH / g, such as 200 to 600 mgKOH / g, such as 240 to 550 mgKOH / g, or alternately of 150 mgKOH / g or less, such as 100 mgKOH / g or less, or 200 mgKOH / g or more, or 300 mgKOH / g or more, or 350 mgKOH / g or more. The calcium detergent preferably has a TBN of greater than or equal 500, or 600, or 700, or 800, or 1000, or 1200, or 1300, or 1400 mgKOH / g.Suitably, the calcium detergent is a calcium salicylate, sulfonate, or phenate having a TBN of from 30 to 1400 mgKOH / g, 30 to 1200 mgKOH / g (ASTM D2896), such as 50 to 1000 mgKOH / g, such as 200 to 800 mgKOH / g, such as 240 to 600 mgKOH / g or alternately of 150 mgKOH / g or less, such as 100 mgKOH / g or less, or 200 mgKOH / g or more, or 300 mgKOH / g or more, or 350 mgKOH / g or more, or 500 mgKOH / g or more, or 700 mgKOH / g or more, or 900 mgKOH / g or more, or 1100 mgKOH / g or more, or 1300 mgKOH / g or more.Calcium detergent is typically present in amount sufficient to provide at least 400 ppm, or at least 500 ppm, or at least 520 ppm, or at least 540 ppm, or at least 560 ppm, or at least 580 ppm, or at least 600 ppm, or at least 650 ppm, or at least 700 ppm, or at least 750 ppm, or at least 800 ppm, or at least 850 ppm, or at least 900 ppm, or at least 1000 ppm, or at least 1100 ppm, or at least 1200 ppm by weight of calcium to the composition (ASTM D5185).Suitably the total atomic amount of metal from detergent in the lubrication composition according to all aspects of the disclosure is no more than 5000 ppm, preferably no more than 4000 pm and more preferably no more than 2000 ppm (ASTM D5185). The total amount of atomic metal from detergent in the lubrication oil composition according to all aspects of the disclosure is suitably at least 500 ppm, preferably at least 800 ppm and more preferably at least 1000 ppm (ASTM D5185). The total amount of atomic metal from detergent in the lubrication oil composition according to all aspects of the disclosure is suitably from 500 to 5000 ppm, preferably from 500 to 3000 ppm and more preferably from 500 to 2500 ppm (ASTM D5185).Sulfonate detergents may be prepared from sulfonic acids which are typically obtained by the sulfonation of alkyl substituted aromatic hydrocarbons, such as those obtained from the fractionation of petroleum or by the alkylation of aromatic hydrocarbons. Examples include those obtained by alkylating benzene, toluene, xylene, naphthalene, diphenyl, or their halogen derivatives such as chlorobenzene, chlorotoluene, and chloronaphthalene. The alkylation may be carried out in the presence of a catalyst with alkylating agents having from about 3 to more than 70 carbon atoms. The alkaryl sulfonates usually contain from about 9 to about 80 or more carbon atoms, preferably from about 16 to about 60 carbon atoms per alkyl substituted aromatic moiety. The oil soluble sulfonates or alkaryl sulfonic acids may be neutralized with oxides, hydroxides, alkoxides, carbonates, carboxylate, sulfides, hydrosulfides, nitrates, borates and ethers of the metal. The amount of metal compound is chosen having regard to the desired TBN of the final product, but typically ranges from about 100 to 220 mass % (preferably at least 125 mass %) of that stoichiometrically required.Metal salts of phenols and sulfurized phenols are prepared by reaction with an appropriate metal compound such as an oxide or hydroxide and neutral or overbased products may be obtained by methods well known in the art. Sulfurized phenols may be prepared by reacting a phenol with sulfur or a sulfur-containing compound such as hydrogen sulfide, sulfur monohalide, or sulfur dihalide, to form products which are generally mixtures of compounds in which 2 or more phenols are bridged by sulfur-containing bridges.Carboxylate detergents,e.g., salicylates, can be prepared by reacting an aromatic carboxylic acid (such as a C5-100, C9-30, C14-24alkyl-substituted hydroxy-benzoic acid) with an appropriate metal compound such as an oxide or hydroxide and neutral or overbased products may be obtained by methods well known in the art. The aromatic moiety of the aromatic carboxylic acid can contain heteroatoms, such as nitrogen and oxygen. Preferably, the moiety contains only carbon atoms; more preferably the moiety contains six or more carbon atoms; for example, benzene is a preferred moiety. The aromatic carboxylic acid may contain one or more aromatic moieties, such as one or more benzene rings, either fused or connected via alkylene bridges.Preferred substituents in oil-soluble salicylic acids are alkyl substituents. In alkyl – substituted salicylic acids, the alkyl groups advantageously contain 5 to 100, preferably 9 to 30, especially 14 to 20, carbon atoms. Where there is more than one alkyl group, the average number of carbon atoms in all of the alkyl groups is preferably at least 9 to ensure adequate oil solubility.Further, as metal organic and inorganic base salts, which are used as detergents can contribute to the sulfated ash content of a lubricating oil composition, in embodiments of the present disclosure, the amounts of such additives are minimized. In order to maintain a low sulfur level, salicylate detergents can be used and the lubricating composition herein may comprise one or more salicylate detergents (said detergents are preferably used in amounts in the range of 0.05 to 20.0 wt %, more preferably from 1.0 to 10.0 wt % and most preferably in the range of from 2.0 to 5.0 wt %, based on the total weight of the lubricating composition).The total sulfated ash content of the lubricating composition herein is typically not greater than 5.0 wt %, alternately at a level of not greater than 3.5 wt % and alternately at a level of not greater than 1.5 wt %, based on the total weight of the lubricating composition as determined by ASTM D874.Furthermore, it is useful that each of the detergents, independently, have a TBN (total base number) value in the range of from 10 to 700 mgKOH / g, 10 to 500 mgKOH / g, alternately in the range of from 100 to 650, alternately in the range of from 10 to 500 mgKOH / g, alternately in the range of from 30 to 350 mgKOH / g, and alternately in the range of from 50 to 300 mgKOH / g, as measured by ISO 3771.The sulfonate detergents (such as Ca and / or Mg sulfonate detergents) may be present in an amount to deliver 0.1 wt % to 1.5 wt %, or 0.15 to 1.2 wt %, or 0.2 wt % to 0.9 wt % sulfonate soap to the lubricant composition.The salicylate detergents (such as Ca and / or Mg salicylate detergents) are present in an amount to deliver 0.3 wt % to 1.4 wt %, or 0.35 wt % to 1.2 wt %, or 0.4 wt % to 1.0 wt % salicylate soap to the lubricant composition.The sulfonate soap may be present in an amount 0.2 wt % to 0.8 wt % of the lubricant composition, and the salicylate soap may be present in an amount 0.3 wt % to 1.0 wt % of the lubricant composition.The total of all alkaline earth metal detergent soap may be present in an amount 0.6 wt % to 2.1 wt %, or 0.7 wt % to 1.4 wt % of the lubricant composition.Typically, lubricating compositions formulated for use in heavy-duty diesel engines comprise detergents at from about 0.1 to about 10 mass %, alternately from about 0.5 to about 7.5 mass %, alternately from about 1 to about 6.5 mass %, based on the lubricating composition.Typically, lubricating compositions formulated for use in a passenger-car engines comprise detergents at from about 0.1 to about 10 mass %, alternately from about 0.5 to about 7.5 mass %, alternately from about 1 to about 6.5 mass %, based on the lubricating composition.Typically, lubricating compositions formulated for use in a drive train (e.g., transmissions) comprise detergents at from about 0.1 to about 10 mass %, alternately from about 0.5 to about 7.5 mass %, alternately from about 2 to about 6.5 mass %, based on the lubricating composition.Typically, lubricating oil compositions formulated for use in marine or stationary gas engines comprise detergents at from about 0.1 to about 15 mass %, alternately from about 0.5 to about 12 mass %, alternately from about 2 to about 6 mass %, based on the total lubricating oil composition.C. DispersantsDuring engine operation, oil-insoluble oxidation byproducts are produced. Dispersants help keep these byproducts in solution, thus diminishing their deposition on metal surfaces. Dispersants used in the formulation of the lubricating compositions herein may be ashless or ash-forming in nature. Preferably, the dispersant is ashless. So called ashless dispersants are organic materials that form substantially no ash upon combustion. For example, non-metal-containing or borated metal-free dispersants are considered ashless. In contrast, metal-containing detergents tend to form ash upon combustion.Dispersants useful herein typically contain a polar group attached to a relatively high molecular weight hydrocarbon chain. The polar group typically contains at least one element of nitrogen, oxygen, or phosphorus. Typical hydrocarbon chains contain 40 to 500, such as 50 to 400 carbon atoms.Dispersants of (Poly)alkenylsuccinic derivativesA particularly useful class of dispersants includes the (poly)alkenylsuccinic derivatives, typically produced by the reaction of a long chain hydrocarbyl-substituted succinic compound, usually a hydrocarbyl-substituted succinic anhydride, with a polyhydroxy or polyamino compound. The long chain hydrocarbyl group constituting the oleophilic portion of the molecule which confers solubility in the oil, is often a polyisobutylene group (typically the long chain hydrocarbyl group, such as a polyisobutylene group, has an Mn of 400 to 3000 g / mol, such as 450 to 2500 g / mol). Many examples of this type of dispersant are well known commercially and in the literature. Exemplary US Patents describing such dispersants include US Patent Nos. 3,172,892; 3,2145,707; 3,219,666; 3,316,177; 3,341,542; 3,444,170; 3,454,607; 3,541,012; 3,630,904; 3,632,511; 3,787,374 and 4,234,435. Other types of dispersants are described in US Patent Nos. 3,036,003; 3,200,107; 3,254,025; 3,275,554; 3,438,757; 3,454,555; 3,565,804; 3,413,347; 3,697,574; 3,725,277; 3,725,480; 3,726,882; 4,454,059; 3,329,658; 3,449,250; 3,519,565; 3,666,730; 3,687,849; 3,702,300; 4,100,082; 5,705,458. A further description of dispersants useful herein may be found, for example, in European Patent Applications Nos. 0 471 071 and 0 451 380, to which reference is made for this purpose.Hydrocarbyl-substituted succinic acid and hydrocarbyl-substituted succinic anhydride derivatives are useful dispersants. In particular, succinimide, succinate esters, or succinate ester amides prepared by the reaction of a hydrocarbon-substituted succinic acid or anhydride compound (typically having at least 25 carbon atoms, such as 28 to 400 carbon atoms, in the hydrocarbon substituent), with at least one equivalent of a polyhydroxy or polyamino compound (such as an alkylene amine) are particularly useful herein. Hydrocarbyl-substituted succinic acid and hydrocarbyl-substituted succinic anhydride derivatives may have a number average molecular weight of at least 400 g / mol, such as at least 900 g / mol, such as at least 1500 g / mol, such as from 400 to 4000 g / mol, such as from 800 to 3000, such as from 2000 to 2800 g / mol, such from about 2100 to 2500 g / mol, and such as from about 2200 to about 2400 g / mol.Succinimides, which are particularly useful herein, are formed by the condensation reaction between: 1) hydrocarbyl-substituted succinic anhydrides, such as polyisobutylene succinic anhydride (PIBSA); and 2) polyamine (PAM). Examples of suitable polyamines include: polyhydrocarbyl polyamines, polyalkylene polyamines, hydroxy-substituted polyamines, polyoxyalkylene polyamines, and combinations thereof. Examples of polyamines include tetraethylene pentamine, pentaethylene hexamine, tetraethylenepentamine (TEPA), pentaethylenehaxamine (PEHA), N-phenyl-p-phenylenediamine (ADPA), and other polyamines having an average of 5, 6, 7, 8, or 9 nitrogen atoms per molecule. Mixtures where the average number of nitrogen atoms per polyamine molecule is greater than 7 are commonly called heavy polyamines or H-PAMs and may be commercially available under trade names such as HPA™ and HPA-X™ from Dow Chemical, E-100™ from Huntsman Chemical, et al. Examples of hydroxy-substituted polyamines include N-hydroxyalkyl-alkylene polyamines such as N-(2-hydroxyethyl)ethylene diamine, N-(2-hydroxyethyl)piperazine, and / or N-hydroxyalkylated alkylene diamines of the type described, for example, in US Patent No. 4,873,009. Examples of polyoxyalkylene polyamines include polyoxyethylene and / or polyoxypropylene diamines and triamines (as well as co-oligomers thereof) having an average Mn from about 200 to about 5000 g / mol. Products of this type are commercially available under the tradename Jeffamine™. Representative examples of useful succinimides are shown in US Patent Nos. 3,087,936; 3,172,892; 3,219,666; 3,272,746; 3,322,670; 3,652,616; 3,948,800; and 6,821,307; and CA Patent No. 1,094,044.The dispersants may comprise one or more, optionally borated, higher molecular weight (Mn 1600 g / mol or more, such as 1800 to 3000 g / mol) succinimides and one or more, optionally borated, lower molecular weight (Mn less than 1600 g / mol) succinimides, where the higher molecular weight may be 1600 to 3000 g / mol, such as 1700 to 2800 g / mol, such as 1800 to 2500 g / mol, such as 1850 to 2300 g / mol; and the lower molecular weight may be 600 to less than 1600 g / mol, such as 650 to 1500 g / mol, such as 700 to 1400 g / mol, such as 800 to 1300 g / mol, such as 850 to 1200 g / mol such as 900 to 1150 g / mol, such as 900 to 1000 g / mol. The higher molecular weight succinimide dispersant may be present in the lubricating composition in an amount of from 0.5 to 10 wt %, or from 0.8 to 6 wt %, or from 1.0 to 5 wt %, or from 1.5 to 5 wt %, or from 1.5 to 4.0 wt %; and the lower molecular weight succinimides dispersant may be present in the lubricating composition in an amount of from 1 to 5 wt %, or from 1.5 to 4.8 wt %, or from 1.8 to 4.6 wt %, or from 1.9 to 4.6 wt %, or at 2 wt % or more, such as 2 to 5 wt %. The lower molecular weight succinimides may differ from the higher molecular weight succinimides, by 500 g / mol or more, such as by 750 g / mol or more, such as by 1000 g / mol or more, such as by 1200 g / mol or more, such as by 500 to 3000 g / mol, such as by 750 to 2000 g / mol, such as by 1000 to 1500 g / mol.Succinate esters useful as dispersants include those formed by the condensation reaction between hydrocarbyl-substituted succinic anhydrides and alcohols or polyols. For example, the condensation product of a hydrocarbyl-substituted succinic anhydride and pentaerythritol is a useful dispersant.Succinate ester amides useful herein are formed by a condensation reaction between hydrocarbyl-substituted succinic anhydrides and alkanol amines. Suitable alkanol amines include ethoxylated polyalkylpolyamines, propoxylated polyalkylpolyamines, and polyalkenylpolyamines such as polyethylene polyamines and / or propoxylated hexamethylenediamine. Representative examples are shown in US Patent No. 4,426,305.Hydrocarbyl-substituted succinic anhydrides (such as PIBSA) esters of hydrocarbyl bridged aryloxy alcohols are also useful as dispersants herein. For information on such dispersants, please see US Patent No. 7,485,603, particularly, col 2, ln 65 to col 6, ln 22 and col 23, ln 40 to col 26, ln 46. In particular, PIBSA esters of methylene-bridged naphthyloxy ethanol (i.e., 2-hydroxyethyl-1-naphthol ether (or hydroxy-terminated ethylene oxide oligomer ether of naphthol) are useful herein.The molecular weight of the hydrocarbyl-substituted succinic anhydrides used in the preceding paragraphs will typically range from 350 to 4000 g / mol, such as 400 to 3000 g / mol, such as 450 to 2800 g / mol, such as 800 to 2500 g / mol. The above (poly)alkenylsuccinic derivatives can be post-reacted with various reagents such as sulfur, oxygen, formaldehyde, carboxylic acids such as oleic acid.The dispersants may be present in the lubricant in an amount 0.1 mass % to 20 mass % of the composition, such as 0.2 to 15 mass %, such as 0.25 to 10 mass %, such as 0.3 to 5 mass %, such as 1.0 mass % to 3.0 mass %, of the lubricating oil composition.The above (poly)alkenylsuccinic derivatives, can also be post reacted with boron compounds such as boric acid, borate esters or highly borated dispersants, to form borated dispersants generally having from about 0.1 to about 5 moles of boron per mole of dispersant reaction product.Dispersants useful herein include borated succinimides, including those derivatives from mono-succinimides, bis-succinimides, and / or mixtures of mono- and bis-succinimides, wherein the hydrocarbyl succinimide is derived from a hydrocarbylene group such as polyisobutylene having an Mn of from about 300 to about 5000 g / mol, or from about 500 to about 3000 g / mol, or about 1000 to about 2000 g / mol, or a mixture of such hydrocarbylene groups, often with high terminal vinylic groups.The boron-containing dispersant may be present at 0.01 wt % to 20 wt %, or 0.1 wt % to 15 wt %, or 0.1 wt % to 10 wt %, or 0.5 wt % to 8 wt %, or 1.0 wt % to 6.5 wt %, or 0.5 wt % to 2.2 wt % of the lubricating composition.The boron-containing dispersant may be present in an amount to deliver boron to the composition at 15 ppm to 2000 ppm, or 25 ppm to 1000 ppm, or 40 ppm to 600 ppm, or 80 ppm to 350 ppm.The borated dispersant may be used in combination with non-borated dispersant and may be the same or different compound as the non-borated dispersant. In one embodiment, the lubricating composition may include one or more boron-containing dispersants and one or more non-borated dispersants, wherein the total amount of dispersant may be 0.01 wt % to 20 wt %, or 0.1 wt % to 15 wt %, or 0.1 wt % to 10 wt %, or 0.5 wt % to 8 wt %, or 1.0 wt % to 6.5 wt %, or 0.5 wt % to 2.2 wt % of the lubricating composition and wherein the ratio of borated dispersant to non-boroated dispersant may be 1:10 to 10:1 (weight:weight) or 1:5 to 3:1 or 1:3 to 2:1.The dispersant may comprise one or more borated or unborated poly(alkenyl)succinimides, where the polyalkyenyl is derived from polyisobutylene and the imide is derived from a polyamine (“PIBSA-PAM”).The dispersant may comprise one or more PIBSA-PAMs, where the PIB is derived from polyisobutylene having an Mn of from 600 to 5000, such as from 700 to 4000, such as from 800 to 3000, such as from 900 to 2500 g / mol and the polyamine is derived from hydrocarbyl-substituted polyamines, such as tetraethylene pentamine, pentaethylene hexamine, tetraethylenepentamine (TEPA), pentaethylenehaxamine (PEHA), N-phenyl-p-phenylenediamine (ADPA), and other polyamines having an average of 5, 6, 7, 8, or 9 nitrogen atoms per molecule). The dispersant may be borated, typically at levels of up to 4 mass % such as from 1 to 3 mass %. The dispersant may comprise one or more borated and one or more non-borated PIBSA-PAM’s. The dispersant may comprise one or more borated PIBSA-PAM’s derived from a PIB having an Mn of 700 to 1800 g / mol (such as 800 to 1500 g / mol) and one or more non-borated PIBSA-PAM’s derived from a PIB having an Mn of more than 1800 to 5000 g / mol (such as 2000 to 3000 g / mol). The dispersant may comprise one or more non-borated PIBSA-PAM’s derived from a PIB having an Mn of 700 to 1800 g / mol (such as 800 to 1500 g / mol) and one or more borated PIBSA-PAM’s derived from a PIB having an Mn of more than 1800 to 5000 g / mol (such as 2000 to 3000 g / mol).The dispersant may comprise PIBSA derived from a PIB having an Mn of 700 to 5000 g / mol (such as 800 to 3000 g / mol) and one or more borated or non-borated PIBSA-PAM’s derived from a PIB having an Mn of 700 to 5000 g / mol.The dispersant may comprise PIBSA derived from a PIB having an Mn of 700 to 5000 g / mol (such as 800 to 3000 g / mol) and one or more borated PIBSA-PAM’s derived from a PIB having an Mn of 700 to 1800 g / mol (such as 800 to 1500 g / mol) and one or more non-borated PIBSA-PAM’s derived from a PIB having an Mn of more than 1800 to 5000 g / mol (such as 2000 to 3000 g / mol). The dispersant may comprise PIBSA derived from a PIB having an Mn of 700 to 5000 g / mol (such as 800 to 3000 g / mol) one or more non-borated PIBSA-PAM’s derived from a PIB having an Mn of 700 to 1800 g / mol (such as 800 to 1500 g / mol) and one or more borated PIBSA-PAM’s derived from a PIB having an Mn of more than 1800 to 5000 g / mol (such as 2000 to 3000 g / mol).The dispersant may comprise one or more borated or non-borated PIBSA-PAM’s and one or more PIBSA-esters of hydrocarbyl bridged aryloxy alcohols.The dispersant may comprise one or more borated and one or more non-borated PIBSA-PAM’s.The dispersant may comprise one or more, optionally borated, higher molecular weight (Mn 1600 g / mol or more, such as 1800 to 3000 g / mol) PIBSA-PAM’s and one or more, optionally borated, lower molecular weight (Mn less than 1600 g / mol) PIBSA-PAM’s, where the higher molecular weight may be 1600 to 3000 g / mol, such as 1700 to 2800 g / mol, such as 1800 to 2500 g / mol, such as 1850 to 2300 g / mol; and the lower molecular weight may be 600 to less than 1600 g / mol, such as 650 to 1500 g / mol, such as 700 to 1400 g / mol, such as 800 to 1300 g / mol, such as 850 to 1200 g / mol, such as 900 to 11500 g / mol, such as 900 to 100 g / mol. The higher molecular weight PIBSA-PAM dispersant may be present in the lubricating composition in an amount of from 0.5 to 10 wt %, or from 0.8 to 6 wt %, or from 1.0 to 5 wt %, or from 1.5 to 5 wt % or from 1.5 to 4.0 wt %; and the lower molecular weight PIBSA-PAM dispersant may be present in the lubricating composition in an amount of from 1 to 5 wt %, or from 1.5 to 4.8 wt %, or from 1.8 to 4.6 wt %, or from 1.9 to 4.6 wt %, or at 2 wt % or more, such as 2 to 5 wt %.In one preferred form, the dispersant may comprise one or more, optionally borated, higher molecular weight (Mn 1600 g / mol or more) PIBSA-PAM’s and one or more, optionally borated, lower molecular weight (Mn less than 1600 g / mol) PIBSA-PAM’s, where the higher molecular weight PIBSA-PAM’s are included in the lubricating oil composition at less than or equal to 2.5 wt%, or less than or equal to 1.5 wt%, or less than or equal to 0.5 wt%, or 0.0 wt%. In the preferred form wherein the dispersant comprises one or more, optionally borated, higher molecular weight (Mn 1600 g / mol or more) PIBSA-PAM’s and one or more, optionally borated, lower molecular weight (Mn less than 1600 g / mol) PIBSA-PAM’s, the treat level of the combination of the higher molecular weight PIBSA-PAM’s and the lower molecular weight PIBSA-PAM’s may range for 1.0 to 6.0 wt%, or 1.5 to 5.5 wt%, or 2.0 to 5.0 wt%, or 2.5 to 4.5 wt%, or 3.0 to 4.0 wt%.Dispersants of Mannich BasesMannich base dispersants useful herein are typically made from the reaction of an amine component, a hydroxy aromatic compound (substituted or unsubstituted, such as alkyl substituted), such as alkylphenols, and an aldehyde, such as formaldehyde. See US Patent Nos. 4,767,551 and 10,899,986. Process aids and catalysts, such as oleic acid and sulfonic acids, can also be part of the reaction mixture. Representative examples are shown in US Patent Nos. 3,697,574; 3,703,536; 3,704,308; 3,751,365; 3,756,953; 3,798,165; 3,803,039; 4,231,759; 9,938,479; 7,491,248; and 10,899,986, and PCT Publication No. WO 01 / 42399.Dispersants of Polymethacrylate or Polyacrylate DerivativesPolymethacrylate or polyacrylate derivatives are another class of dispersants useful herein. These dispersants are typically prepared by reacting a nitrogen-containing monomer and a methacrylic or acrylic acid esters containing 5-25 carbon atoms in the ester group. Representative examples are shown in US Patent Nos. 2,100,993, and 6,323,164. Polymethacrylate and polyacrylate dispersants are typically lower molecular weights.The lubricating composition of the disclosure typically comprises dispersant at 0.1 mass % to 20 mass % of the composition, such as 0.2 to 15 mass %, such as 0.25 to 10 mass %, such as 0.3 to 5 mass %, such as 2.0 mass % to 4.0 mass % of the lubricating oil composition. Alternately the dispersant may be present at 0.1 wt % to 5 wt %, or 0.01 wt % to 4 wt % of the lubricating composition.For further information on dispersants useful herein, please see US Patent No. 10,829,712, col 13, ln 36 to col 16, ln 67 and US Patent No. 7,485,603, col 2, ln 65 to col 6, ln 22, col 8, ln 25 to col 14, ln 53, and col 23, ln 40 to col 26, ln 46.Compositions according to the present disclosure may contain an additive having a different enumerated function that also has secondary effects as a dispersant. These additives are not included as dispersants for purposes of determining the amount of dispersant in a lubricating oil composition or concentrate herein.D. Corrosion Inhibitors / Anti-rust AgentsCorrosion inhibitors may be used to reduce the corrosion of metals and are often alternatively referred to as metal deactivators or metal passivators. Some corrosion inhibitors may alternatively be characterized as antioxidants.Suitable corrosion inhibitors may include nitrogen and / or sulfur-containing heterocyclic compounds such as triazoles (e.g., benzotriazoles), substituted thiadiazoles, imidazoles, thiazoles, tetrazoles, hydroxyquinolines, oxazolines, imidazolines, thiophenes, indoles, indazoles, quinolines, benzoxazines, dithiols, oxazoles, oxatriazoles, pyridines, piperazines, triazines and derivatives of any one or more thereof. A particular corrosion inhibitor is a benzotriazole represented by the structure:wherein R8is absent (hydrogen) or is a C1to C20hydrocarbyl or substituted hydrocarbyl group which may be linear or branched, saturated or unsaturated. It may contain ring structures that are alkyl or aromatic in nature and / or contain heteroatoms such as N, O, or S. Examples of suitable compounds may include benzotriazole, alkyl-substituted benzotriazoles (e.g., tolyltriazole, ethylbenzotriazole, hexylbenzotriazole, octylbenzotriazole, etc.), aryl substituted benzotriazole, alkylaryl- or arylalkyl-substituted benzotriazoles, and the like, as well as combinations thereof. For instance, the triazole may comprise or be a benzotriazole and / or an alkylbenzotriazole in which the alkyl group contains from 1 to about 20 carbon atoms or from 1 to about 8 carbon atoms. Non-limiting examples of such corrosion inhibitors may comprise or be benzotriazole, tolyltriazole, and / or optionally, substituted benzotriazoles such as Irgamet™ 39, which is commercially available from BASF of Ludwigshafen, Germany. A preferred corrosion inhibitor may comprise or be benzotriazole and / or tolyltriazole.Additionally, or alternatively, the corrosion inhibitor may include one or more substituted thiadiazoles represented by the structure:wherein R15and R16are independently hydrogen or a hydrocarbon group, which group may be aliphatic or aromatic, including cyclic, alicyclic, aralkyl, aryl and alkaryl, and wherein each w is independently 1, 2, 3, 4, 5, or 6 (preferably 2, 3, or 4, such as 2). These substituted thiadiazoles are derived from the 2,5-dimercapto-1,3,4-thiadiazole (DMTD) molecule. Many derivatives of DMTD have been described in the art, and any such compounds may be included in the fluid used in the present disclosure. For example, US Patent Nos. 2,719,125; 2,719,126; and 3,087,937; describe the preparation of various 2, 5-bis-(hydrocarbon dithio)-1,3,4-thiadiazoles.Further, additionally or alternatively, the corrosion inhibitor may include one or more other derivatives of DMTD, such as a carboxylic ester in which R15and R16may be joined to the sulfide sulfur atom through a carbonyl group. Preparation of these thioester-containing DMTD derivatives is described, for example, in US Patent No. 2,760,933. DMTD derivatives produced by condensation of DMTD with alpha-halogenated aliphatic carboxylic acids having at least 10 carbon atoms are described, for example, in US Patent No. 2,836,564. This process produces DMTD derivatives wherein R15and R16are HOOC-CH(R19)-(R19being a hydrocarbyl group). DMTD derivatives further produced by amidation or esterification of these terminal carboxylic acid groups may also be useful.The preparation of 2-hydrocarbyldithio-5-mercapto-1,3,4-thiadiazoles is described, for example, in U.S. Patent No. 3,663,561.A class of DMTD derivatives may include mixtures of a 2-hydrocarbyldithio-5-mercapto-1,3,4-thiadiazole and a 2,5-bis-hydrocarbyldithio-1,3,4-thiadiazole. Such mixtures may be sold under the tradename HiTEC™ 4313 and are commercially available from Afton Chemical Company.The preparation of 2-hydrocarbyldithio-5-mercapto-1,3,4-thiadiazoles is described, for example, in US Patent No. 3,663,561.A class of DMTD derivatives may include mixtures of a 2-hydrocarbyldithio-5-mercapto-1,3,4-thiadiazole and a 2,5-bis-hydrocarbyldithio-1,3,4-thiadiazole. Such mixtures may be sold under the tradename HiTEC™ 4313 and are commercially available from Afton Chemical Company.Still further, additionally or alternatively, the corrosion inhibitor may include a trifunctional borate having the structure, B(OR46)3, in which each R46may be the same or different. As the borate may typically be desirably compatible with the non-aqueous medium of the composition, each R46may, in particular, comprise or be a hydrocarbyl C1-C8moiety. For compositions in which the non-aqueous medium comprises or is a lubricating oil basestock, for example, better compatibility can typically be achieved when the hydrocarbyl moieties are each at least C4. Non-limiting examples of such corrosion inhibitors thus include, but are not limited to, triethylborate, tripropylborates such as triisopropylborate, tributylborates such as tri-tert-butylborate, tripentylborates, trihexylborates, trioctylborates such as tri-(2-ethylhexyl)borate, monohexyl dibutylborate, and the like, as well as combinations thereof.When used, a corrosion inhibitor may comprise a substituted thiadiazole, a substituted benzotriazole, a substituted triazole, a trisubstituted borate, or a combination thereof.When desired, corrosion inhibitors can be used in any effective amount, but, when used, may typically be used in amounts from about 0.001 wt % to 5.0 wt %, based on the weight of the composition,e.g., from 0.005 wt % to 3.0 wt % or from 0.01 wt % to 1.0 wt %. Alternately, such additives may be used in an amount of about 0.01 to 5 wt %, preferably about 0.01 to 1.5 wt %, based upon the weight of the lubricating composition.In some embodiments, 3,4-oxypyridinone-containing compositions may contain substantially no (e.g., 0, or less than 0.001 wt %, 0.0005 wt % or less, not intentionally added, and / or absolutely no) triazoles, benzotriazoles, substituted thiadiazoles, imidazoles, thiazoles, tetrazoles, hydroxyquinolines, oxazolines, imidazolines, thiophenes, indoles, indazoles, quinolines, benzoxazines, dithiols, oxazoles, oxatriazoles, pyridines, piperazines, triazines, derivatives thereof, combinations thereof, or all corrosion inhibitors.Compositions according to the present disclosure may contain an additive having a different enumerated function that also has secondary effects as a corrosion inhibitor (for example, Component B Functionalized Polymer described above, may also have corrosion inhibitor effects). These additives are not included as corrosion inhibitor for purposes of determining the amount of corrosion inhibitor in a lubricating oil composition or concentrate herein.E. Antiwear AgentsThe lubricating oil compositions and concentrate compositions of the present disclosure can contain one or more antiwear agents that can reduce friction and excessive wear. Any antiwear agent known by a person of ordinary skill in the art may be used in the lubricating oil composition. Non-limiting examples of suitable antiwear agents include zinc dithiophosphate, metal (e.g., Pb, Sb, Mo, and the like) salts of dithiophosphates, metal (e.g., Zn, Pb, Sb, Mo, and the like) salts of dithiocarbamates, metal (e.g., Zn, Pb, Sb, and the like) salts of fatty acids, boron compounds, phosphate esters, phosphite esters, amine salts of phosphoric acid esters or thiophosphoric acid esters, reaction products of dicyclopentadiene and thiophosphoric acids and combinations thereof. The amount of the antiwear agent may vary from about 0.01 wt % to about 5 wt %, from about 0.05 wt % to about 3 wt %, or from about 0.1 wt % to about 1 wt %, based on the total weight of the lubricating oil composition.In embodiments, the antiwear agent is or comprises a dihydrocarbyl dithiophosphate metal salt, such as zinc dialkyl dithiophosphate compounds. The metal of the dihydrocarbyl dithiophosphate metal salt may be an alkali or alkaline earth metal, or aluminum, lead, tin, molybdenum, manganese, nickel, or copper. In some embodiments, the metal is zinc. In other embodiments, the alkyl group of the dihydrocarbyl dithiophosphate metal salt has from about 3 to about 22 carbon atoms, from about 3 to about 18 carbon atoms, from about 3 to about 12 carbon atoms, or from about 3 to about 8 carbon atoms. In further embodiments, the alkyl group is linear or branched.Useful antiwear agents also include substituted or unsubstituted thiophosphoric acids, and salts thereof include zinc-containing compounds such as zinc dithiophosphate compounds selected from zinc dialkyl-, diaryl- and / or alkylaryl-dithiophosphates.A metal alkylthiophosphate and more particularly a metal dialkyl dithio phosphate in which the metal constituent is zinc, or zinc dialkyl dithio phosphate (ZDDP) can be a useful component of the lubricating compositions of this disclosure. ZDDP can be derived from primary alcohols, secondary alcohols or mixtures thereof. ZDDP compounds generally are of the formula Zn[SP(S)(OR1)(OR2)]2where R1and R2are C1-C18alkyl groups, preferably C2-C12alkyl groups. These alkyl groups may be straight chain or branched. Alcohols used in the ZDDP can be 2-propanol, butanol, secondary butanol, pentanols, hexanols such as 4-methyl-2-pentanol, n-hexanol, n-octanol, 2-ethyl hexanol, alkylated phenols, and the like. Mixtures of secondary alcohols or of primary and secondary alcohol can be used. Alkyl aryl groups may also be used. Useful zinc dithiophosphates include secondary zinc dithiophosphates such as those available from The Lubrizol Corporation under the trade designations “LZ™ 677A”, “LZ™ 1095” and “LZ ™1371”, from Chevron Oronite under the trade designation “OLOA™ 262” and from Afton Chemical under the trade designation “HiTEC™ 7169”.In embodiments, the zinc compound can be a zinc dithiocarbamate complex, such as the zinc dithiocarbamates represented by the formula:where each RIis independently a linear, cyclic, or branched, saturated or unsaturated, aliphatic hydrocarbon moiety having from 1 to about 10 carbon atoms, n is 0, 1, or 2, L is a ligand that saturates the coordination sphere of zinc, and x is 0, 1, 2, 3, or 4. In certain embodiments, the ligand, L, is selected from the group consisting of water, hydroxide, ammonia, amino, amido, alkylthiolate, halide, and combinations thereof.The antiwear additives, such as ZDDP and / or the zinc carbamates, are typically used in amounts of from about 0.08 wt % to about 1.2 wt %, preferably from about 0.5 wt % to about 1.0 wt %, and more preferably from about 0.6 wt % to about 0.8 wt %, based on the total weight of the lubricating composition, although more or less can often be used advantageously. Preferably, the antiwear additive is ZDDP, preferably a secondary ZDDP, and is present in an amount of from about 0.6 to 1.0 wt % of the total weight of the lubricating composition. The lubricating oil compositions of the instant disclosure preferably include one or more ZDDPs at a treat level to deliver less than or equal to 1200 ppm, or 1000 ppm, or 800 ppm, or 600 ppm, or 400 ppm, or 200 ppm, or 0 ppm by weight of phosphorous to the composition.Antiwear additives useful herein also include boron-containing compounds, such as borate esters, borated fatty amines, borated epoxides, alkali metal (or mixed alkali metal or alkaline earth metal) borates and borated overbased metal salts.Compositions according to the present disclosure may contain an additive having a different enumerated function that also has secondary effects as an antiwear agent (for example, Component B Functionalized Polymer described above, may also have antiwear effects). These additives are not included as antiwear agents for purposes of determining the amount of antiwear agents in a lubricating oil composition or concentrate herein.When lubricating oil compositions contain one or more of the additives discussed above, the additive(s) are typically blended into the composition in an amount sufficient for it to perform its intended function. Typical amounts of such additives useful in the present disclosure, especially for use in crankcase lubricants, are shown in the Table below.It is noted that many of the additives are shipped from the additive manufacturer as a concentrate, containing one or more additives together, with a certain amount of base oil or other diluents. Accordingly, the weight amounts in the table below, as well as other amounts mentioned herein, are directed to the amount of active ingredient (that is the non-diluent portion of the ingredient). The weight percent (mass %) indicated below is based on the total weight of the lubricating oil composition.Typical Amounts of Lubricating Oil ComponentsAdditive FormulationsA(mass % a.i.)B(mass % a.i.)C(mass % a.i.)Dispersant0.1 – 200.5 – 101 – 6Detergents0.1 – 200.2 – 100.3 – 9Corrosion Inhibitor and / orAnti-rust cmpd0 – 70.01 – 50.05 – 1.5Overbased Ca detergent0.1 – 100.2 – 50.3 – 4.5Overbased Mg detergent0.1-100.2 – 50.4 – 4.5High MW PIBSA-PAM0 – 200.5 – 81 to 4Low MW PIBSA-PAM0.1 – 200.5 – 101 – 6Antioxidant0.01 -100.1 – 50.1 – 4Pour Point Depressant0 – 80.005 – 50.01 – 1.5Anti-foaming Agent0 – 10.001 – 0.50.005 – 0.15Functionalized Polymer0.01 – 100.1 – 50.5 – 2Friction Modifier0-20.1-10.2-0.5Antiwear Agent0.01-100.1 – 50.5 – 3Viscosity Modifier0-150.1 – 100.25 – 3Seal Swell Agents0-100.01 – 50.1 – 2Extreme Pressure Agents0-100.01 – 50.1 – 3Unsaturated Hydrocarbons(LAOs)0-100.01 – 50.1 – 3Base stockBalance(such as 50 to 95 %)BalanceBalanceThe foregoing additives are typically commercially available materials. These additives may be added independently, but are usually pre-combined in packages, which can be obtained from suppliers of lubricant oil additives. Additive packages with a variety of ingredients, proportions and characteristics are available and selection of the appropriate package will take the use of the ultimate composition into account.Fuel CompositionsThis disclosure also relates to a method of lubricating a passenger or commercial vehicle ammonia fueled internal combustion engine during operation of the engine comprising: (i) providing to a crankcase of the vehicle ammonia internal combustion engine a vehicle crankcase lubricating oil composition described herein; (ii) providing a ammonia containing fuel in the vehicle ammonia internal combustion engine; and (iii) combusting the fuel in the vehicle ammonia internal combustion engine, such as a spark-ignited or compression-ignited two- or four-stroke reciprocating engines.This disclosure also relates to a fuel composition comprising the lubricating oil compositions described herein and a ammonia containing fuel. The ammonia containing fuel may optionally include other non-ammonia containing fuels, including, but not limited to, natural gas, propane, mogas, renewable fuel, or combinations thereof. The renewable fuel component may be produced from vegetable oil (such as palm oil, rapeseed oil, soybean oil, jatropha oil), microbial oil (such as algae oil), animal fats (such as cooking oil, animal fat, and / or fish fat) and / or biogas. Renewable fuel refers to biofuel produced from biological resources formed through contemporary biological processes. In an embodiment, the renewable fuel component is produced by means of a hydrotreatment process. Hydrotreatment involves various reactions where molecular hydrogen reacts with other components, or the components undergo molecular conversions in the presence of molecular hydrogen and a solid catalyst. The reactions include, but are not limited to, hydrogenation, hydrodeoxygenation, hydrodesulfurization, hydrodenitrification, hydrodemetallization, hydrocracking, and isomerization. The renewable fuel component may have different distillation ranges, which provide the desired properties to the component, depending on the intended use.UsesThe lubricating compositions disclosed herein may be used to lubricate mechanical engine components, particularly in ammonia fueled internal combustion engines,e.g., spark-ignited or compression-ignited, two- or four-stroke reciprocating ammonia fueled engines, by adding the lubricant thereto. Typically, they are crankcase lubricants, such as passenger car motor oils or heavy-duty engine lubricants.In particular, the lubricating compositions disclosed herein are suitably used in the lubrication of the crankcase of a compression-ignited, ammonia fueled internal combustion engine, such as a heavy-duty engine.In particular, the lubricating compositions disclosed herein are suitably used in the lubrication of the crankcase of a spark-ignited turbo charged ammonia fueled internal combustion engine.In embodiments, the lubricating oils disclosed herein are used in spark-assisted high compression ammonia fueled internal combustion engines.In embodiments, the lubricating compositions disclosed herein are suitably used in the lubrication of the crankcase of an ammonia fueled engine for a heavy-duty vehicle (i.e., a heavy-duty vehicle having a gross vehicle weight rating of 10,000 pounds or more.)In particular, lubricating oil formulations of this disclosure are particularly useful in compression-ignited ammonia fueled internal combustion engines,i.e., heavy-duty engines, employing low viscosity oils, such as API FA-4 and future oil categories, in which wear protection of the valve train becomes challenging.Also, the lubricating compositions described herein may be useful as lubricants for natural gas engines [e.g., natural gas is the fuel the engines run on, commonly called GEOs or (natural) gas engine oils].The lubricating compositions described herein may be used to lubricate mechanical engine components, particularly in ammonia fueled internal combustion engines,e.g., spark-ignited or compression-ignited two- or four-stroke reciprocating engines, by adding the lubricant thereto.The lubricating compositions described herein are particularly suitable for ammonia fueled internal combustion engines that are prone to piston-liner wear from a long duration of operation, hence the invention might extend engine lifetime.A still further aspect of the present disclosure relates to the use of a lubricant composition for improving engine cleanliness in an ammonia fueled internal combustion engine (AICE), wherein the lubricant composition comprises:a) an oil of lubricating viscosity at greater than 50 wt.% of the composition comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof;b) optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more);c) one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), wherein the treat level of the combination of the higher molecular weight PIBSA-PAM and lower molecular weight PIBSA-PAM is from 2.5 to 12.0 wt.% of the composition, wherein the treat level of the lower molecular weight PIBSA-PAM is from 0.1 to 9.0 wt.% of the composition, and wherein the treat level of the higher molecular weight PIBSA-PAM is less than or equal to 3.0 wt.%; andd) one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, and combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) by D2896 greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; ande) one or more zinc dialkyl dithiophosphate (ZDDP) compounds at from about 0.08 wt.% to about 2.0 wt.% of the lubricating oil composition;wherein the lubricating oil composition has a total sulfated ash of less than or equal to 5.0 wt.%, and a total phosphorous level of less than or equal to 0.120 wt.%, and a viscosity of less than or equal to 25 cSt (KV100), preferably wherein the lubricating oil composition upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in a MCT (GFC Lu 27-A-13) cleanliness merit rating change versus a comparable lubricating oil composition (i.e., the same lubricating oil composition) not exposed to ammonia contamination of less than or equal to 4.0 merits.Additional Embodiments / Clauses:1. A lubricating oil composition for ammonia fueled internal combustion engines (AICE) comprising or resulting from the admixing of: a) an oil of lubricating viscosity at greater than 50 wt.% of the composition comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof; b) optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more); c) one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), wherein the treat level of the combination of the higher molecular weight PIBSA-PAM and lower molecular weight PIBSA-PAM is from 2.5 to 12.0 wt.% of the composition, wherein the treat level of the lower molecular weight PIBSA-PAM is from 0.1 to 9.0 wt.% of the composition, and wherein the treat level of the higher molecular weight PIBSA-PAM is less than or equal to 3.0 wt.%; and d) one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, or combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; and e) one or more zinc dialkyl dithiophosphate (ZDDP) compounds at from about 0.08 wt.% to about 2.0 wt.% of the lubricating oil composition; wherein the lubricating oil composition having a total sulfated ash of less than or equal to 5.0 wt.%, and a total phosphorous level of less than or equal to 0.120 wt.%, and an overall viscosity of less than or equal to 25 cSt (KV100); and wherein the lubricating oil composition upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in a MCT (GFC Lu 27-A-13) cleanliness merit rating change versus a comparable lubricating oil composition not exposed to ammonia contamination of less than or equal to 4.0 merits.2. The composition of clause 1, wherein the lubricating oil composition upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in a MCT (GFC Lu 27-A-13) cleanliness merit rating change versus a comparable lubricating oil composition not exposed to ammonia contamination of less than or equal to 2.0 merits.3. The composition of clauses 1-2, wherein the lubricating oil composition upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in an increase in kinematic viscosity (KV100) of less than or equal to 50%.4. The composition of clauses 1-3, wherein the hydrocarbyl group of the zinc hydrocarbyl dithiophosphate is derived from one or more primary alcohols, one or more secondary alcohols or a combination of primary and secondary alcohols.5. The composition of clauses 1-4, wherein the one or more zinc dialkyldithiophosphates (ZDDP) include greater than or equal to 85 wt.% secondary alcohols and less than or equal to 15 wt.% primary alcohols.6. The composition of clauses 1-5, wherein the lubricating oil composition further comprises a functionalized polymer at from 0.01 to 20 wt.% based upon the total weight of the lubricating oil composition, wherein the functionalized polymer comprises a partially or fully saturated olefin homopolymer or copolymer backbone and at least one functional group, having: i) an Mn of 10,000 g / mol or more (GPC-PS) of the polymer prior to functionalization, ii) where the functional group is derived from an acylating agent and a compound containing amino and / or hydroxyl groups (including but not limited to where the polymer is functionalized with an acylating agent and subsequently reacted with a compound containing amino and / or hydroxyl groups), and iii) wherein the homopolymer or copolymer backbone is derived from monomers selected from the group consisting of C2to C30linear alpha olefins, and C4to C20conjugated dienes.7. The composition of clause 6, wherein the functionalized polymer is at from 0.3 to 5 wt.% based upon the total weight of the lubricating oil composition, and the functionalized polymer comprises an amide, imide, and / or ester functionalized partially or fully saturated polymer comprising C4-5olefins having: i) an Mw / Mn of less than 2, cii) a Functionality Distribution (Fd) value of 3.5 or less, and iii) an Mn of 10,000 g / mol or more (GPC-PS) of the polymer prior to functionalization, provided that, if the polymer prior to functionalization is a copolymer of isoprene and butadiene, then the Mn of the copolymer is greater than 25,000 g / mol (GPC-PS).8. . The composition of clauses 1-7 further including one or more corrosion inhibitors, rust inhibitors or combinations thereof at a treat rate of greater than or equal to 0.02 wt.% of the lubricating oil composition.9. The composition of clause 8, wherein the one or more corrosion and / or rust inhibitors are selected from the group consisting of a non-ionic fatty alcohol ethoxylate, a substituted thiadiazole, a substituted benzotriazole, a substituted triazole, a trisubstituted borate, a primary amine, a substituted carboxylic acid functional group, a substituted ester functional group, a substituted anhydride functional group, and combinations thereof.10. The composition of clauses 1-9, wherein the metal of the one or more overbased metal detergents is selected from the group consisting of sodium, potassium, lithium, calcium, and magnesium.11. The composition of clauses 1-10, wherein the optional higher molecular weight PIBSA-PAM is borated, the lower molecular weight PIBSA-PAM is borated or a combination thereof, and is / are included at a treat level to deliver from 20 ppm to 1000 ppm by weight of boron to the composition.12. The composition clauses 1-11, wherein the one or more, optionally borated, lower molecular weight PIBSA-PAM dispersant is from 2.0 to 6.0 wt.% of the composition.13. The composition of clauses 1-12, wherein the oil of lubricating viscosity is at from 60 wt.% to 95 wt.% of the composition, comprises a Group II base oil, a Group III base oil, a Group IV base oil or combinations thereof, and is substantially free of Group I base oil.14. The composition of clauses 1-13, wherein the one or more overbased metal detergents includes a mixture of a calcium salicylate detergent and calcium sulfonate detergent that delivers to the composition a total soap of at least 10 mmol.15. The composition of clauses 1-14, further including one or more of the following components: one or more friction modifiers; one or more antioxidants; one or more pour point depressants; one or more anti-foaming agents; one or more viscosity modifiers; one or more dispersants other than the higher molecular weight PIBSA-PAM and the lower molecular weight PIBSA-PAM; one or more inhibitors, one or more antirust agents; one or more seal swell agents; and / or one or more other anti-wear agents.16. The composition of clause 15, wherein the one or more antioxidants includes one or more phenolic antioxidants, one or more sulfur based antioxidants, one or more aminic antioxidants or a combination thereof, and wherein the one or more antioxidants comprise from 1.0 to 6.0 wt.% of the composition.17. The composition of clause 15, wherein the one or more friction modifier includes a dimeric molybdenum dialkyldithiocarbamate (moly dimer), a trimeric molybdenum dialkyldithiocarbamate (moly trimer), or a combination thereof at a treat level to deliver from 12 ppm to 1000 ppm by weight of molybdenum to the composition.18. The composition of clauses 1-17, wherein the lubricating oil composition is used as a passenger vehicle lubricant (PVL), a commercial vehicle lubricant (CVL), or a marine vessel lubricant.19. A method of lubricating an ammonia internal combustion engine comprising supplying to the engine a lubricating oil composition according to any one of clauses 1 to 18.20. A method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) comprising: i) providing to the ammonia fueled internal combustion engine a lubricating oil composition comprising or resulting from the admixing of:a) an oil of lubricating viscosity at greater than 50 wt.% of the composition comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof; b) optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more); c) one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), wherein the treat level of the combination of the higher molecular weight PIBSA-PAM and lower molecular weight PIBSA-PAM is from 2.5 to 12.0 wt.% of the composition, wherein the treat level of the lower molecular weight PIBSA-PAM is from 0.1 to 9.0 wt.% of the composition, and wherein the treat level of the higher molecular weight PIBSA-PAM is less than or equal to 3.0 wt.%; and d) one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, and combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; and e) one or more zinc dialkyl dithiophosphate (ZDDP) compounds at from about 0.08 wt.% to about 2.0 wt.% of the lubricating oil composition; wherein the lubricating oil composition having a total sulfated ash of less than or equal to 5.0 wt.%, and a total phosphorous level of less than or equal to 0.120 wt.%, and an overall viscosity of less than or equal to 25 cSt (KV100); and ii) providing a fuel comprising ammonia to the ammonia fueled internal combustion engine; and iii) combusting the fuel in the ammonia fueled internal combustion engine; and wherein the lubricating oil composition upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in a MCT (GFC Lu 27-A-13) cleanliness merit rating change versus a comparable lubricating oil composition not exposed to ammonia contamination of less than or equal to 4.0 merits.21. The method of clause 20, wherein the lubricating oil composition upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in an increase in kinematic viscosity (KV100) of less than or equal to 50%.22. The method of clauses 20-21, wherein the hydrocarbyl group of the zinc hydrocarbyl dithiophosphate is derived from one or more primary alcohols, one or more secondary alcohols or a combination of primary and secondary alcohols.23. The method of clauses 20-22, wherein the one or more zinc dialkyldithiophosphates (ZDDP) include greater than or equal to 85 wt.% secondary alcohols and less than or equal to 15 wt.% primary alcohols.24. The method of clauses 20-23, wherein the lubricating oil composition further comprises a functionalized polymer at from 0.01 to 20 wt.% based upon the total weight of the lubricating oil composition, wherein the functionalized polymer comprises a partially or fully saturated olefin homopolymer or copolymer backbone and at least one functional group, having: i) an Mn of 10,000 g / mol or more (GPC-PS) of the polymer prior to functionalization, ii) where the functional group is derived from an acylating agent and a compound containing amino and / or hydroxyl groups (including but not limited to where the polymer is functionalized with an acylating agent and subsequently reacted with a compound containing amino and / or hydroxyl groups), and iii) wherein the homopolymer or copolymer backbone is derived from monomers selected from the group consisting of C2to C30linear alpha olefins, and C4to C20conjugated dienes.25. The method of clause 24, wherein the functionalized polymer is at from 0.3 to 5 wt.% based upon the total weight of the lubricating oil composition, and the functionalized polymer comprises an amide, imide, and / or ester functionalized partially or fully saturated polymer comprising C4-5olefins having: i) an Mw / Mn of less than 2, ii) a Functionality Distribution (Fd) value of 3.5 or less, and iii) an Mn of 10,000 g / mol or more (GPC-PS) of the polymer prior to functionalization, provided that, if the polymer prior to functionalization is a copolymer of isoprene and butadiene, then the Mn of the copolymer is greater than 25,000 g / mol (GPC-PS).26. The method of clauses 20-25 further including one or more corrosion inhibitors, rust inhibitors or combinations thereof at a treat rate of greater than or equal to 0.02 wt.% of the lubricating oil composition.27. The method of clause 26, wherein the one or more corrosion and / or rust inhibitors are selected from the group consisting of a non-ionic fatty alcohol ethoxylate, a substituted thiadiazole, a substituted benzotriazole, a substituted triazole, a trisubstituted borate, a primary amine, a substituted carboxylic acid functional group, a substituted ester functional group, a substituted anhydride functional group, and combinations thereof.28. The method of clauses 20-27, wherein the metal of the one or more overbased metal detergents is selected from the group consisting of sodium, potassium, lithium, calcium, and magnesium.29. The method of clauses 20-28, wherein the optional higher molecular weight PIBSA-PAM is borated, the lower molecular weight PIBSA-PAM is borated or a combination thereof, and is / are included at a treat level to deliver from 20 ppm to 1000 ppm by weight of boron to the composition.30. The method clauses 20-29, wherein the one or more, optionally borated, lower molecular weight PIBSA-PAM dispersant is from 2.0 to 6.0 wt.% of the composition.31. The method of clauses 20-30, wherein the oil of lubricating viscosity is at from 60 wt.% to 95 wt.% of the composition, comprises a Group II base oil, a Group III base oil, a Group IV base oil or combinations thereof, and is substantially free of Group I base oil.32. The method of clauses 20-31, wherein the one or more overbased metal detergents includes a mixture of a calcium salicylate detergent and a calcium sulfonate detergent that delivers to the composition a total soap of at least 10 mmol.33. The method of clauses 20-32, further including one or more of the following components: one or more friction modifiers; one or more antioxidants; one or more pour point depressants; one or more anti-foaming agents; one or more viscosity modifiers; one or more dispersants other than the higher molecular weight PIBSA-PAM and the lower molecular weight PIBSA-PAM; one or more inhibitors, one or more antirust agents; one or more seal swell agents; and / or one or more other anti-wear agents.34. The method of clause 33, wherein the one or more antioxidants includes one or more phenolic antioxidants, one or more sulfur based antioxidants, one or more aminic antioxidants or a combination thereof, and wherein the one or more antioxidants comprise from 1.0 to 6.0 wt.% of the composition.35. The method of clause 33, wherein the one or more friction modifier includes a dimeric molybdenum dialkyldithiocarbamate (moly dimer), a trimeric molybdenum dialkyldithiocarbamate (moly trimer), or a combination thereof at a treat level to deliver from 12 ppm to 1000 ppm by weight of molybdenum to the composition.36. The method of clauses 20-35, wherein the lubricating oil composition is used as a passenger vehicle lubricant (PVL), a commercial vehicle lubricant (CVL), or a marine vessel lubricant.37. The method of clauses 20-36, wherein the fuel further includes diesel fuel, natural gas, propane, mogas, renewable fuel, or combinations thereof.38. The method of clauses 20-37, wherein the fuel supplied to the engine comprises at least 50 mass% ammonia, based upon the mass of the fuel.39. The method of clauses 20-38, wherein the fuel supplied to the engine comprises substantially 100 mass% ammonia, based upon the mass of the fuel.40. The method of clauses 20-39, wherein the fuel comprising ammonia and the lubricating oil composition are combined in a combustion chamber of the ammonia fueled internal combustion engine to form a fuel composition.41. The method of clauses 20-40, wherein the fuel comprising ammonia and the lubricating oil composition are combined prior to injection into a combustion chamber of the ammonia fueled internal combustion engine (AICE) to form a fuel composition.42. The method of clauses 20-41, wherein the ammonia fueled internal combustion engine (AICE) is spark ignited or compression ignited.43. The method of clauses 20-42, wherein the ammonia fueled internal combustion engine is a heavy duty or light duty internal combustion engine.44. The method of clauses 20-43, wherein the ammonia fueled internal combustion engine is a stationary internal combustion engine.45. The method of clauses 20-44, further including providing a turbocharger or a supercharger prior to the ammonia fueled internal combustion engine.46. A concentrate comprising or resulting from the admixing of: from 1 to less than or equal to 50 wt.% of one or more base oils; from 2 to 40 wt.% of one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate and combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; from 2 to 40 wt.% of optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more), and one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), and from 2 to 20 wt.% of one or more zinc hydrocarbyl diphosphate compounds, wherein the one or more zinc hydrocarbyl diphosphate compounds include hydrocarbyl groups derived from one or more primary alcohols, one or more secondary alcohols or a combination of primary and secondary alcohols.47. The concentrate of clause 46, further including from 0.10 to 10 wt.% of one or more corrosion inhibitors, rust inhibitors or combinations thereof selected from the group consisting of a non-ionic fatty alcohol ethoxylate, a substituted thiadiazole, a substituted benzotriazole, a substituted triazole, a trisubstituted borate, a primary amine, a substituted carboxylic acid functional group, a substituted ester functional group, a substituted anhydride functional group and combinations thereof.48. The concentrate of clauses 46-47, further including from 1 to 30 wt.%, such as 2 to 20 wt.%, based upon the weight of the concentrate, of one or more functionalized polymers, wherein the one or more functionalized polymers comprise a partially or fully saturated olefin homopolymer or copolymer backbone and at least one functional group, having: i) an Mn of 10,000 g / mol or more (GPC-PS) of the polymer prior to functionalization, ii) where the functional group is derived from an acylating agent and a compound containing amino and / or hydroxyl groups (including but not limited to where the polymer is functionalized with an acylating agent and subsequently reacted with a compound containing amino and / or hydroxyl groups), and iii) wherein the homopolymer or copolymer backbone is derived from monomers selected from the group consisting of C2 to C30 linear alpha olefins, and C4 to C20 conjugated dienes.49. The concentrate of clauses 46-48, further comprising combining the concentrate with a base oil to form a lubricating oil composition comprising: a) an oil of lubricating viscosity at greater than 50 wt.% of the composition comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof; b) optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more); c) one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), wherein the treat level of the combination of the higher molecular weight PIBSA-PAM and lower molecular weight PIBSA-PAM is from 2.5 to 12.0 wt.% of the composition, wherein the treat level of the lower molecular weight PIBSA-PAM is from 0.1 to 9.0 wt.% of the composition, and wherein the treat level of the higher molecular weight PIBSA-PAM is less than or equal to 3.0 wt.%; and d) one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, and combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; and e) one or more zinc dialkyl dithiophosphate (ZDDP) compounds at from about 0.08 wt.% to about 2.0 wt.% of the lubricating oil composition; wherein the lubricating oil composition having a total sulfated ash of less than or equal to 5.0 wt.%, and a total phosphorous level of less than or equal to 0.120 wt.%, and an overall viscosity of less than or equal to 25 cSt (KV100); and wherein the lubricating oil composition upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in a MCT (GFC Lu 27-A-13) cleanliness merit rating change versus a comparable lubricating oil composition not exposed to ammonia contamination of less than or equal to 4.0 merits.50. The use of lubricating oil composition according to any one of clauses 1 to 18 for improving engine cleanliness in an ammonia fueled internal combustion engine (AICE).The following non-limiting examples are provided to illustrate the disclosure.EXPERIMENTALAll molecular weights are number average molecular weights (Mn) reported in g / mol, as determined by gel permeation chromatography using polystyrene standards, unless otherwise noted. “A.I.”, “a.i.”, and “ai” are wt % active ingredient, unless otherwise indicated.Testing ProceduresSulfated ash("SASH") content is measured by ASTM D874.Phosphorus, Calcium, Zinc, Boron, Molybdenum, Magnesium, SulfurandSiliconcontent are measured by ASTM D5185 and ASTM D4951.KV100is Kinematic viscosity measured at 100° C according to ASTM D445-19a.KV40is Kinematic viscosity measured at 40° C according to ASTM D445-19a.Total Base Number (TBN)is measured by ASTM D2896.Total Acid Number (TAN)is measured by ASTM D664.NOx Agingof the lubricating oil composition (LOC) sample procedure is done as follows: 1200g of fresh oil was charged into a 4-necked round bottom flask and heated to 160 °C using a hotplate. One of the necks contains the temperature probe, two necks contain sintered glass gas dispersion sparges with pore size of 100-160 um which deliver the NOx (766 ppm NO2 in air, ~21% O2 & 79% N2) at 48 L / hr (2x 24 L / hr). The fourth neck contains a H-bar which leads to a condenser and catch pot for volatiles. The oils were stirred for 96 hours using a magnetic stirrer bar. End-of-test product was analysed by TBN by ASTM D2896, Nitrogen content by ASTM D5762, Kinematic Viscosity at 100°C by ASTM D445, and analysed by IR to determine oxidation and nitration by DIN 51453 method.Ammonia agingof the NOx aged sample procedure is done as follows: ~1100g of the NOx aged oil was charged into a 3-necked round bottom flask and heated to 150 °C using a heating mantle with thermocouple. One of the necks contained a hypodermic needle ~1.19 mm internal diameter which delivers the NH3 at a flow rate of 140 mL / min. The samples were stirred for 72 hours using a magnetic stirrer bar.The NOx-Ammonia Aging Protocolis the combination of first “NOx Aging” of the lubricating oil as described above followed by “Ammonia Aging” of the NOx aged lubricating oil as described above.PDSC test (CEC-L-85-99)measures oxidation induction time of a lubricating oil composition.Nitrogen level test ASTM D5762measures nitrogen level in a lubricating oil composition.MCT cleanliness test (GFC Lu 27-A-13)measures the cleanliness performance of a lubricating oil composition, when sprayed onto a metal plate at elevated temperatures. A higher merit rating is indicative of better deposit control performance.KHTT cleanliness test (JPI-55-55-99)measures the cleanliness performance of a lubricating oil composition when passed at high pressure through a glass tube at 325°C.MaterialsComponent ChartAdditional Lubricating Oil ComponentsDescriptionLMW dispersantPolyisobutylene succinimide having 1 to 3 mass % boron, based upon a PIB having an Mn of about 900-1050 g / mol in oil, ai ~40-50HMW DispersantPolyisobutylene succinimide based upon a PIB having an Mn of about 2000-2300 g / mol in oil, ai ~45-60Metal sulfonate-300 TBNCalcium sulfonate detergent having a TBN of approximately 300 mgKOH / g (on an as diluted basis) in oil, ai ~55Metal Phenate260 TBNCalcium phenate detergent having a TBN of approximately 260 mgKOH / g (on an as diluted basis) in oil, ai ~59metal Salicylate detergent A~225 TBNCalcium salicylate detergent having a TBN of approximately 225 mgKOH / g (on an as diluted basis) in oil, ai ~70metal Salicylate detergent B~350 TBNCalcium salicylate detergent having a TBN of approximately 350 mgKOH / g (on an as diluted basis) in oil, ai ~67ZDDPZinc dialkyl dithiophosphate in oil, where the alkyl groups are derived from a mixture of 1° and 2° alcohols, 75 -92 aiPIBSAPolyisobutylene succinate having an Mn of approximately 2000-2300 g / mol in oil, ai ~70-75Anti-foamantPolydimethylsiloxaneEXAMPLESExample 1Inventive (“Inv. Ex.”) and comparative (“Comp. Ex.”) lubricating oil compositions were prepared per the formulation table shown below in Table 1. The inventive lubricating oil compositions yielded similar performance in bench cleanliness tests as the comparative examples, but after exposure to oxidative condition and ammonia exhibited significantly better performance than comparative examples exposed in same method to ammonia. The inventive lubricating oil compositions also exhibited less degradation (by analysis of chemical & physical properties in Table 1 below) than the comparative examples.The inventors have discovered the importance of detergent selection (carboxylate or sulfonate-carboxylate mix preferred), dispersant selection (mix of HMW & LMW dispersants (where the higher MW dispersant is less than or equal to 3.0 wt% and the lower MW dispersant is greater than 0.1 wt% or alternatively, only lower MW dispersant is present where the lower MW dispersant is greater than 4.0 wt%) based on the data depicted in Table 1 below.Comp.Ex.Inv.Ex.Inv.Ex.Comp.Ex.Inv.Ex.Comp.Ex.Comp.Ex.ConstituentOil 1Oil 2Oil 4Oil 6Oil 7Oil 8Oil 9LMW Dispersant(Borated)0.9500.6002.0004.2000.6000.600HMW Dispersant3.1602.0000.6004.2002.0002.000metal Sulfonate Detergent~300 TBN3.800metal Phenate Detergent~260 TBN4.900metal Salicylate detergent A~225 TBN2.6002.6002.6002.6002.600metal Salicylate detergent B~350 TBN1.8001.8001.8001.8001.800Other lubricant additives**1.2201.2201.2201.2201.2201.2201.220Total Gp I Base Oil90.27091.78091.78090.18090.18092.38091.280TOTAL100.000100.000100.000100.000100.000100.000100.000CategoryMeasure-ment,UnitViscosity (KV100) cSt,FreshKV100, cSt13.9413.7412.9713.9715.2114.5613.6NOxKV100, cSt18.1217.7217.0317.5317.9622.0620.75NOx-NH3KV100, cSt19.9120.0118.3819.1519.3927.3924.6MCTFreshMCT Merit rating(0-10)7.87.18.07.07.06.77.5NOx-NH3MCTMerit rating(0-10)3.14.24.02.84.92.51.9NOx-NH3DMCT rating4.72.94.04.22.14.25.6Total soapCalculated total soap(mmol)27.0127.0127.0127.0127.017.9833.66SASHCalculated SASH(wt%)1.511.511.531.491.581.521.61ASTM5185Measured Phosphorus(ppm)552529540533515526543ASTM5185Measured Boron(ppm)14086280218784**ZDDP, hindered phenol antioxidant, demulsifier, PIBSA, anti-foamant.Applicants have attempted to disclose all embodiments and applications of the disclosed subject matter that could be reasonably foreseen. However, there may be unforeseeable, insubstantial modifications that remain as equivalents. While the present invention has been described in conjunction with specific, exemplary embodiments thereof, it is evident that many alterations, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description without departing from the spirit or scope of the present disclosure. Accordingly, the present disclosure is intended to embrace all such alterations, modifications, and variations of the above detailed description.All patents, test procedures, and other documents cited herein, including priority documents, are fully incorporated by reference to the extent such disclosure is not inconsistent with this invention and for all jurisdictions in which such incorporation is permitted.When numerical lower limits and numerical upper limits are listed herein, ranges from any lower limit to any upper limit are contemplated.

Claims

1.A lubricating oil composition for ammonia fueled internal combustion engines (AICE) comprising or resulting from the admixing of:a) an oil of lubricating viscosity at greater than 50 wt.% of the composition comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof;b) optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more);c) one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol),wherein the treat level of the combination of the higher molecular weight PIBSA-PAM and lower molecular weight PIBSA-PAM is from 2.5 to 12.0 wt.% of the composition, wherein the treat level of the lower molecular weight PIBSA-PAM is from 0.1 to 9.0 wt.% of the composition, and wherein the treat level of the higher molecular weight PIBSA-PAM is less than or equal to 3.0 wt.%; andd) one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, or combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; ande) one or more zinc dialkyl dithiophosphate (ZDDP) compounds at from about 0.08 wt.% to about 2.0 wt.% of the lubricating oil composition;wherein the lubricating oil composition having a total sulfated ash of less than or equal to 5.0 wt.%, and a total phosphorous level of less than or equal to 0.120 wt.%, and an overall viscosity of less than or equal to 25 cSt (KV100); andwherein the lubricating oil composition upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in a MCT (GFC Lu 27-A-13) cleanliness merit rating change versus a comparable lubricating oil composition not exposed to ammonia contamination of less than or equal to 4.0 merits.2.The composition of claim 1, wherein the lubricating oil composition upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in an increase in kinematic viscosity (KV100) of less than or equal to 50%.3.The composition of claims 1-2, further including one or more corrosion inhibitors, rust inhibitors or combinations thereof at a treat rate of greater than or equal to 0.02 wt.% of the lubricating oil composition.4.The composition of claim 3, wherein the one or more corrosion and / or rust inhibitors are selected from the group consisting of a non-ionic fatty alcohol ethoxylate, a substituted thiadiazole, a substituted benzotriazole, a substituted triazole, a trisubstituted borate, a primary amine, a substituted carboxylic acid functional group, a substituted ester functional group, a substituted anhydride functional group, and combinations thereof.5.The composition of claims 1-4, wherein the metal of the one or more overbased metal detergents is selected from the group consisting of sodium, potassium, lithium, calcium, and magnesium.6.The composition of claims 1-5, wherein the optional higher molecular weight PIBSA-PAM is borated, the lower molecular weight PIBSA-PAM is borated or a combination thereof, and is / are included at a treat level to deliver from 20 ppm to 1000 ppm by weight of boron to the composition.7.The composition of claims 1-6, wherein the one or more overbased metal detergents includes a mixture of a calcium salicylate detergent and calcium sulfonate detergent that delivers to the composition a total soap of at least 10 mmol.8.The composition of claims 1-7, further including one or more of the following components: one or more friction modifiers; one or more antioxidants; one or more pour point depressants; one or more anti-foaming agents; one or more viscosity modifiers; one or more dispersants other than the higher molecular weight PIBSA-PAM and the lower molecular weight PIBSA-PAM; one or more inhibitors, one or more antirust agents; one or more seal swell agents; and / or one or more other anti-wear agents.9.The composition of claims 1-8, wherein the lubricating oil composition is used as a passenger vehicle lubricant (PVL), a commercial vehicle lubricant (CVL), or a marine vessel lubricant.10.A method of improving engine cleanliness in an ammonia fueled internal combustion engine (AICE) comprising:i) providing to the ammonia fueled internal combustion engine a lubricating oil composition comprising or resulting from the admixing of:a) an oil of lubricating viscosity at greater than 50 wt.% of the composition comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof;b) optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more);c) one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), wherein the treat level of the combination of the higher molecular weight PIBSA-PAM and lower molecular weight PIBSA-PAM is from 2.5 to 12.0 wt.% of the composition, wherein the treat level of the lower molecular weight PIBSA-PAM is from 0.1 to 9.0 wt.% of the composition, and wherein the treat level of the higher molecular weight PIBSA-PAM is less than or equal to 3.0 wt.%; andd) one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, and combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; ande) one or more zinc dialkyl dithiophosphate (ZDDP) compounds at from about 0.08 wt.% to about 2.0 wt.% of the lubricating oil composition;wherein the lubricating oil composition having a total sulfated ash of less than or equal to 5.0 wt.%, and a total phosphorous level of less than or equal to 0.120 wt.%, and an overall viscosity of less than or equal to 25 cSt (KV100); andii) providing a fuel comprising ammonia to the ammonia fueled internal combustion engine; andiii) combusting the fuel in the ammonia fueled internal combustion engine; andwherein the lubricating oil composition upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in a MCT (GFC Lu 27-A-13) cleanliness merit rating change versus a comparable lubricating oil composition not exposed to ammonia contamination of less than or equal to 4.0 merits.11.The method of claim 10, wherein the lubricating oil composition upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in an increase in kinematic viscosity (KV100) of less than or equal to 50%.12.The method of claims 10-11 further including one or more corrosion inhibitors, rust inhibitors or combinations thereof at a treat rate of greater than or equal to 0.02 wt.% of the lubricating oil composition.13.The method of claim 12, wherein the one or more corrosion and / or rust inhibitors are selected from the group consisting of a non-ionic fatty alcohol ethoxylate, a substituted thiadiazole, a substituted benzotriazole, a substituted triazole, a trisubstituted borate, a primary amine, a substituted carboxylic acid functional group, a substituted ester functional group, a substituted anhydride functional group, and combinations thereof.14.The method of claims 10-13, wherein the metal of the one or more overbased metal detergents is selected from the group consisting of sodium, potassium, lithium, calcium, and magnesium.15.The method of claims 10-14, wherein the optional higher molecular weight PIBSA-PAM is borated, the lower molecular weight PIBSA-PAM is borated or a combination thereof, and is / are included at a treat level to deliver from 20 ppm to 1000 ppm by weight of boron to the composition.16.The method of claims 10-15, wherein the one or more overbased metal detergents includes a mixture of a calcium salicylate detergent and a calcium sulfonate detergent that delivers to the composition a total soap of at least 10 mmol.17.The method of claims 10-16, further including one or more of the following components: one or more friction modifiers; one or more antioxidants; one or more pour point depressants; one or more anti-foaming agents; one or more viscosity modifiers; one or more dispersants other than the higher molecular weight PIBSA-PAM and the lower molecular weight PIBSA-PAM; one or more inhibitors, one or more antirust agents; one or more seal swell agents; and / or one or more other anti-wear agents.18.The method of claims 10-17, wherein the lubricating oil composition is used as a passenger vehicle lubricant (PVL), a commercial vehicle lubricant (CVL), or a marine vessel lubricant.19.A concentrate comprising or resulting from the admixing of:from 1 to less than or equal to 50 wt.% of one or more base oils;from 2 to 40 wt.% of one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate and combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition;from 2 to 40 wt.% of optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more), and one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), andfrom 2 to 20 wt.% of one or more zinc hydrocarbyl diphosphate compounds, wherein the one or more zinc hydrocarbyl diphosphate compounds include hydrocarbyl groups derived from one or more primary alcohols, one or more secondary alcohols or a combination of primary and secondary alcohols.20.The concentrate of claim 19, further including from 0.10 to 10 wt.% of one or more corrosion inhibitors, rust inhibitors or combinations thereof selected from the group consisting of a non-ionic fatty alcohol ethoxylate, a substituted thiadiazole, a substituted benzotriazole, a substituted triazole, a trisubstituted borate, a primary amine, a substituted carboxylic acid functional group, a substituted ester functional group, a substituted anhydride functional group and combinations thereof.21.The concentrate of claims 19-20, further comprising combining the concentrate with a base oil to form a lubricating oil composition comprising:a) an oil of lubricating viscosity at greater than 50 wt.% of the composition comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof;b) optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more);c) one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), wherein the treat level of the combination of the higher molecular weight PIBSA-PAM and lower molecular weight PIBSA-PAM is from 2.5 to 12.0 wt.% of the composition, wherein the treat level of the lower molecular weight PIBSA-PAM is from 0.1 to 9.0 wt.% of the composition, and wherein the treat level of the higher molecular weight PIBSA-PAM is less than or equal to 3.0 wt.%; andd) one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, and combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; ande) one or more zinc dialkyl dithiophosphate (ZDDP) compounds at from about 0.08 wt.% to about 2.0 wt.% of the lubricating oil composition;wherein the lubricating oil composition having a total sulfated ash of less than or equal to 5.0 wt.%, and a total phosphorous level of less than or equal to 0.120 wt.%, and an overall viscosity of less than or equal to 25 cSt (KV100); andwherein the lubricating oil composition upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in a MCT (GFC Lu 27-A-13) cleanliness merit rating change versus a comparable lubricating oil composition not exposed to ammonia contamination of less than or equal to 4.0 merits.

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