| 摘要 |
A lubricant composition e.g. for engine oils comprises (i) a base oil, (ii) an antiwear additive combination comprising (a) an organ o- molybdenum compound and (b) an ashless organo-phosphorus compound, and (iii) an antioxidant additive combination comprising (d) an aminic antioxidant and (e) a phenolic antioxidant, the weight ratio of amini c antioxidant to phenolic antioxidant being greater than 1:1, preferably from 1.5:1 to 20:1. The antiwear additive combination (ii) may fu rther comprise (c) a zinc thiophosphate compound selecte d from zinc dialkylditihiophosphate, zinc diaryldithiophosphate and zinc alkylaryld ithiophosphate and zinc arylalkylditihiophosphate and mi xtures thereof.
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