LUBRICATING OIL COMPOSITION

摘要

A lubricating oil composition comprising a base oil having an aromatics content of 3.0 wt.% or less, a nitrogen content of 50 wt.ppm or less, a sulfur content of 50 wt.ppm or less and a viscosity of 2.0-50.0 mm<2>/s at 10 DEG C, and added thereto 0.05-2.0 wt.% of an alkyldiphenylamine and/or a phenyl- alpha -naphthylamine and 50-2,000 wt.ppm (in terms of MO) of C8-C23 MoDTC and/or C3-C18 MoDTP, each based on the total weight of the composition. This composition has high thermal resistance, high oxidation stability and low friction characteristics, and is particularly suitable as a lubricating oil for internal combustion engines.