AN ANTIOXIDANT COMBINATION FOR OXIDATION AND DEPOSIT CONTROLIN LUBRICANTS CONTAINING MOLYBDENUM AND ALKYLATED PHENOTHIAZINE

摘要

The invention relates to a lubricating oil composition having improved antioxidant properties, and which contains a molybdenum compound and an alkylated phenothiazine. Further, it may also include a secondary diarylamine, preferably an alkylated diphenylamine. This combination of additives provides improved oxidation control and friction modifier performance to the lubricating oil. The composition is particularly suited for use as a crankcase lubricant, or a transmission lubricant, including low levels and zero levels of phosphorus.