IMPROVED ABRASION-RESISTANT ADDITIVE FOR LUBRICATING OIL

摘要

A lubricating oil composition comprises: A. a basestock; B. diphenyl carbonate; and C. a metal dialkyldithiophosphate salt. …The preferred component C is a zinc salt. The preferred weight ratio of Component B : component C is 0.5 to 1.5:1. The presence of component B permits a lower amount of phosphorus (in the form of component C) to be used without materially affecting anti-wear properties.