| abstract |
The lubricating oil composition for an internal combustion engine of the present invention is a lubricating oil composition for a internal combustion engine comprising (A) a lubricating base oil comprising a mineral oil and / or a synthetic oil, (B) a boron-containing alkenylsuccinic acid imide in an amount of 0.001 to 0.1% Boron-containing alkyl succinic acid imide, and Mw is 100,000 to 700,000, and Mw / X is 30,000 or more when the weight-average molecular weight is Mw and the average carbon number of the alkyl group measured by 13 C- (C) poly (meth) acrylate in an amount of 0.1 to 30 mass%. |