LUBRICATING OIL FOR INTERNAL COMBUSTION ENGINES

摘要

There is disclosed a lubricating oil for internal combustion engine which comprises: a mineral oil and/or a synthetic lubricating oil as a base oil, and oxymolybdenum dithiocarbamate sulfide expressed by the chemical formula (1): <CHEM> wherein R1 or R1 and R3 denote a branched aliphatic hydrocarbon group having not less than fourteen carbons, and R2 through R4 or R2 and R4 denote an aliphatic hydrocarbon group having not less than four carbons, in the amount of 0.005 to 0.2% by weight, when calculated as molybdenum (Mo).