Synthetic ester lubricating oil composition containing particular t- butylphenyl substituted phosphates and stabilized hydrolytically with particular long chain alkyl amines

摘要

A synthetic ester lubricating oil composition having effective high temperature properties and hydrolytic stability comprising a selected synthetic ester base oil and the additive combination of a selected tertiary-butylphenyl substituted phosphate ester and a selected alkyl amine. Additionally, a method for providing hydrolytically stable turbine oils which comprises adding a combination of a selected tertiary- butylphenyl phosphate and a selected alkyl amine to a synthetic ester base oil.