| abstract |
【Task】 An object of the present invention is to provide a lubricating oil composition having excellent anti-abrasion properties while reducing viscosity and friction. [Solution means] (A) Lubricant base oil, (B) An acidic phosphoric acid ester having one or two alkyl groups, each of which has 4 to 10 carbon atoms, A lubricating oil composition comprising (C) a sulfur-based extreme pressure agent, and (D) a molybdenum friction modifier, However, the lubricating oil composition does not contain a phosphite ester having at least one alkyl group having 9 or more carbon atoms. 【Selection chart】 None |