LUBRICATING OIL COMPOSITION FOR PROTECTION OF SILVER BEARINGS IN MEDIUM SPEED DIESEL ENGINES

摘要

A medium speed diesel engine crankcase lubricating oil composition comprising the following is provided herein: (a) oil with a large amount of lubricating viscosity; And (b) 0.15 to 2.0 weight percent silver lubricity borated fatty acid ester additive. Also provided is a method of reducing silver bearing wear and friction in a medium speed diesel engine, comprising lubricating the engine with the lubricant composition.