Lubricating oil compositions
AssigneeChevron Oronite Company LLC
InventorsElaine S. Yamaguchi, Kam-Sik Ng
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Abstract
A lubricating oil composition is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; and (b) an oil-soluble titanium compound of Formula I: wherein R1, R2, R3 and R4 are independently a C1-C20 alkoxy group, and further wherein the lubricating oil composition is free of any zinc dialkyldithiophosphate.
Claims30
A lubricating oil composition comprising (a) a major amount of an oil of lubricating viscosity;
- and (b) 1,680 ppm to about 11,132 parts per million (ppm) of Ti metal, based on the total weight of the composition, of an oil-soluble titanium compound of Formula I:
- wherein R1, R2, R3 and R4 are independently a C1-C8 alkoxy group;
- wherein the lubricating oil composition is free of any zinc dialkyldithiophosphate and phosphorus content, and further wherein the lubricating oil composition has a sulfur content not exceeding 0.7 wt. %.
A method of reducing wear of metal parts in an internal combustion engine, the method comprising operating the engine with a lubricating oil composition comprising (a) a major amount of an oil of lubricating viscosity;
- and (b) 1,680 ppm to about 11, 132 ppm of Ti metal, based on the total weight of the composition, of an oil-soluble titanium compound of Formula I:
- wherein R1, R2, R3 and R4 are independently a C1-C8 alkoxy group;
- wherein the lubricating oil composition is free of any zinc dialkyldithiophosphate and phosphorus content, and further wherein the lubricating oil composition has a sulfur content not exceeding 0.7 wt. %.
Dependencies are inferred from the claim text.