Patent ID: 7767632

Claim:
A lubricated surface of an internal combustion engine comprising a lubricant composition containing a base oil of lubricating viscosity, an amount of at least one hydrocarbon soluble titanium compound that is effective to provide from about 1 to about 1500 ppm titanium to the lubricant composition, and an amount of glycerol ester that provides a ratio of glycerol ester to titanium ranging from about 20:1 to about 1:1 in the lubricant composition, wherein the combination of titanium compound and glycerol ester is effective to provide an increase in antiwear properties of the lubricant composition greater than antiwear properties of the lubricant composition devoid of the hydrocarbon soluble titanium compound and glycerol ester, and wherein the titanium compound is derived from a titanium alkoxide and a carboxylic acid selected from the group consisting of a non-linear mono-carboxylic acid and a carboxylic acid having more than 22 up to 25 carbon atoms.