LUBRICATING OIL COMPOSITION

摘要

As a lubricating oil composition for which excellent oxidation life and low sludging, which could not coexist with prior combinations of a sulfur antioxidant and a chain stopper, coexist, the present invention provides a lubricating oil composition containing a cyclic ester sulfide or other specified sulfur compound as Component (A) and a chain stopper as Component (B) in a lubricant base oil, the lubricating oil composition being characterized in that the Component (A) content is 10-400 ppm by mass for the amount of elemental sulfur with respect to the total lubricating oil composition and in containing essentially no sulfur-containing metal complexes.