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US 2011/0237479 A1Published application
Method of Lubricating an Internal Combustion Engine
AssigneeThe Lubrizol Corporation
InventorsJody A. Kocsis, Seth L. Crawley
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Abstract
The invention provides a method of lubricating an internal combustion engine in the presence of a contaminant amount of water. The invention further relates to the use of a derivative of a hydroxy-carboxylic acid or a monoester of a polyol and an aliphatic carboxylic acid as a rust inhibitor.
Claims14
1-24. (canceled)
A method of lubricating an internal combustion engine with an engine capacity of six litres or less comprising supplying to said engine a lubricating composition comprising:
- (a) an oil of lubricating viscosity;
- (b) either:
- (i) an amide, ester or imide derivative of a hydroxy-carboxylic acid, or
- (ii) a monoester of a polyol and an aliphatic carboxylic acid;
- and
- (c) a contaminant amount of water, wherein the water is present at 500 ppm or more.
3 more elements
Dependencies are inferred from the claim text.