| abstract |
Provided is a lubricating oil composition capable of maintaining low friction in long-term operation from the early stage of operation of an internal combustion engine. The present invention provides a lubricating oil composition characterized by containing (A) a lubricating base oil, (B) a copolymer having (B1) a unit derived from an alkyl (meth)acrylate having a C1-30 alkyl chain, (B2) a unit derived from a hydroxyalkyl (meth)acrylate having a C1-30 hydroxyl group-containing alkyl chain, and (B3) a unit derived from a C8-120 aromatic vinyl compound, (C) a friction modifier having molybdenum, and (D) a metal detergent. |