Lubricating oil composition, method of lubricating a compression-ignition or spark-ignition internal combustion engine, and use of an additive component

摘要

Lubricating oil composition, method of lubricating a compression ignition or spark ignition internal combustion engine, and use of an additive component. The use, in lubrication of a compression ignition or spark ignition internal combustion engine, which is supplied with a biofuel, of a minor amount of an oil-soluble or oil-dispersible additive component (b) as herein defined in combination with a minor amount of an oil-soluble or oil-dispersible additive component (c) as defined herein in a lubricating oil composition so as to reduce and / or inhibit corrosion of the components of the lubricant. engine, where the lubricating oil composition becomes contaminated with biofuel during engine operation.