Phillips 66
Lubricating oil composition with improved oxidation retention and reduced sludge and varnish formation

Abstract:

A composition comprising: an oil of lubricating viscosity; an alkylated phenyl-.alpha.-naphthyl amine; and at least one oil soluble triazole or derivatives thereof. Wherein the oil soluble triazole or derivatives thereof comprises at least one oil soluble diphenylamine tolutriazole reaction product.