| abstract |
The lubricating oil composition for an internal combustion engine of the present invention comprises: a lubricant base oil comprising a mineral oil and/or a synthetic oil; 0.001 to 0.1 mass% in terms of boron amount based on the total amount of the composition of (B) a boron-containing alkenyl succinimide and/or a boron-containing alkyl succinimide; and the weight average molecular weight is Mw 13 And (C) a poly (meth) acrylate having an Mw of 10 to 70 ten thousand and an Mw/X of 3 ten thousand or more, wherein 0.1 to 30 mass% based on the total amount of the composition is represented by X, which is the average carbon number of the alkyl group in the C-NMR measurement. |