Patent ID: 7285516
Filing Date: 2007-10-23
Classification: C10M,C10N

Abstract:
1. A method of lubricating a compression-ignited internal combustion engine, comprising supplying thereto a lubricant composition comprising: (a) about 0.05 to about 1.5 weight percent of a calcium or magnesium sulphonate detergent; (b) about 0.2 to about 2 weight percent of a calcium salixarate detergent; (c) about 0.2 to about 1.7 weight percent of a magnesium saligenin detergent; and (d) an oil of lubricating viscosity in an amount up to about 99.75 weight percent, wherein the composition has a total sulphur content of below about 0.5 weight percent and a total phosphorus content of below about 0.1 weight percent.