The invention discloses a preparation method for high-
lubricity super 
essential oil. The method comprises the following steps: A, adding 
isopropyl isostearate A, polyether ester B and hydrotreated 
base oil to a reaction kettle; B, heating to 60 DEG C and stirring in a 
machine and 
pulse mode; C, adding an 
antioxidant and a 
corrosion inhibitor to a stirring device; and D, filtering. The preparationmethod is capable of using narrow 
distillation range, high 
flash point, and repeatedly hydrotreated 
base oil in the different viscosities as the 
base oil, abandoning traditional environment-unfriendlyextreme pressure additives, such as sulphur, 
phosphorus and 
chlorine, performing the synthetic 
polymerization through autonomously developed different vegetable fat, and enabling different syntheticpolymerization esters to be compounded so as to achieve the performance of the sulphur, the 
phosphorus and the 
chlorine. In addition, the high-
lubricity super 
essential oil is non-toxic, odorless, andno 
simulation to a 
human body, and a product after a 
polymerization reaction is capable of solving defects that traditional used 
stanol ester is easily oxidized and tacky, the cost is lower in the follow-up 
environmental protection treatment, an 
environmental protection pressure is reduced, and the product reaches or exceeds the performance of imported similar products.