TRIGLYCERIDES AS FRICTION MODIFIERS IN ENGINE OIL FOR IMPROVED FUEL ECONOMY

摘要

1. A friction modifier composition is disclosed thatcomprises an oil of lubricating viscosity and containing afriction-reducing amount of an additive comprising;(A) at least one natural oil comprising an animal oilor vegetable oil comprising a triglyceride of the formula(see Formula I)(A') a diglyceride of the formula(see Formula II, or II)wherein R1, R2 and R3 are independently saturated orunsaturated aliphatic hydrocarbyl groups containing fromabout 8 to about 24 carbon atoms and(B) at least one metal overbased composition.