Lubricating oil composition for corrosion control
OwnerPeter KLEIJWEGT, Kevin M. ZEVENBERGENinventors
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Abstract
A lubricating oil composition is disclosed. The composition includes a major amount of an oil of lubricating viscosity, one or more alkylhydroxy benzoate compound derived from isomerized normal alpha olefins, and oxidation inhibitor system comprising a molybdenum-containing antioxidant and a diphenylamine. The molybdenum-containing antioxidant is present in an amount to provide at least 120 ppm of Mo to the lubricating oil composition. The diphenylamine is present in an amount to provide 0.5 wt. % or more to the lubricating oil composition.
Claims20
A lubricating oil composition comprising:
- major amount of an oil of lubricating viscosity;
- one or more alkylhydroxybenzoate compound derived from isomerized normal alpha olefins;
- and
- oxidation inhibitor system comprising a molybdenum-containing antioxidant and a diphenylamine;
- wherein the molybdenum-containing antioxidant is present in an amount to provide at least 120 ppm of Mo to the lubricating oil composition and wherein the diphenylamine is present in an amount to provide 0.5 wt. % or more to the lubricating oil composition.
A method for reducing copper corrosion in an engine, the method comprising:
- lubricating the engine with a lubricating oil composition comprising:
- major amount of an oil of lubricating viscosity;
- one or more alkylhydroxybenzoate compound derived from isomerized normal alpha olefins;
- and
- oxidation inhibitor system comprising a molybdenum-containing antioxidant and a diphenylamine;
- wherein the molybdenum-containing antioxidant is present in an amount to provide at least 120 ppm of Mo to the lubricating oil composition and wherein the diphenylamine is present in an amount to provide 0.5 wt. % or more to the lubricating oil composition.
A lubricating oil composition comprising:
- major amount of an oil of lubricating viscosity;
- one or more alkylhydroxybenzoate compound derived from C10-C40 isomerized normal alpha olefins;
- and
- oxidation inhibitor system comprising a molybdenum-containing antioxidant and a diphenylamine;
- wherein the molybdenum-containing antioxidant is present in an amount to provide at least 120 ppm of Mo to the lubricating oil composition and wherein the diphenylamine is present in an amount to provide 0.5 wt. % or more to the lubricating oil composition.
Dependencies are inferred from the claim text.