Patent ID: 7875576
Filing Date: 2011-01-25
Classification: C10M,C10N

Abstract:
1. A lubricating oil composition comprising: a) major amount of a base oil of lubricating viscosity; b) from about 0.1 to 10 wt % of an overbased alkaline earth metal alkyl aryl sulfonate detergent having a total base number (TBN) of about 25 to 500; c) from about 0.02 to 10 wt % of a oxymolybdenum-containing complex of a nitrogen-containing compound; d) from about 0.1 to 5.0 wt % of an ester friction modifier; and e) from about 0.2 to 10.0 wt % of an antioxidant selected from the group consisting of a diphenylamine type, a sulfur-containing compound and mixtures thereof; wherein the total concentration of the oxymolybdenum-containing complex and antioxidant must be at least 1.3 wt %, based on the total weight of the lubricating oil composition and wherein the phosphorus content of the total lubricating oil composition is 0.08 wt % or less, based on the total weight of the lubricating oil composition.