Patent ID: 9029304
Filing Date: 2015-05-12
Classification: C10M,C10N

Abstract:
1. A lubricating oil composition comprising: (a) a major amount of base oil of lubricating viscosity; (b) at least 0.50 wt-% of at least one fatty acid amide friction modifier having a melting point of greater than 50° C.; (c) at least 1 wt-% of a polybutylene succinimide dispersant; and (d) a sufficient amount of at least one neutral calcium sulfonate surfactant and at least one overbased calcium sulfonate surfactant to make said lubricating oil composition haze-, sediment-, and skin-free after about three months of storage, provided that said lubricating oil composition contains at least 14.5 mM of total surfactant per kg of said lubricating oil composition; and wherein the lubricating oil composition is a tractor hydraulic fluid.