| abstract |
(57) [Summary] [Structure] A base oil consisting of a mineral oil-based lubricating oil, a synthetic lubricating oil, or a mixture of both, and (A) a base number of 150 m 10 to 30 gKOH / g or more of calcium phenate %, And (B) an engine oil composition containing 2 to 15% by weight of calcium salicylate having a base number of 200 mgKOH / g or more. [Effect] In addition to having good low temperature fluidity, it also has high cleanability and wear resistance. |