Engine oil composition

摘要

There is provided a composition having therein a base oil with a specified kinematic viscosity and with a specified total amount of aromatics, comprising, in specified amounts based on the total weight of the composition: (b) an alkaline earth metal salicylate detergent; (c) a zinc dialkyldithiophosphate; (d) a succinimide ashless dispersant containing a polybutenyl group having a specified number-average molecular weight; (e) a phenol ashless antioxidant; (f) a molybdenum dithiocarbamate friction modifier; and (g) a viscosity index improver in such an amount that the kinematic viscosity of said composition ranges from 5.6 to 12.5 mm2/s at 100 DEG C. The present invention provides an engine oil which has excellent fuel consumption and maintains the fuel consumption for a long period of time.