STEEL MOLYBDATE AS OXIDATION INHIBITOR

摘要

A lubricating oil having improved oxidation stability and wear protection comprises a major proportion of lubricating oil basestock and effective amounts of at least one copper salt and at least one molybdenum salt. The preferred total concentration of copper is about 0.006 to 0.5 wt %, and of molybdenum about 0.004 to 0.3 wt %, calculated as metal. Copper oleate and molybdenum naphthenate are the preferred salts.