LUBRICANT OIL COMPOSITION

摘要

A lubricant oil composition that among those of the same viscosity grade, attains a further reduction of lubrication resistance to thereby enhance the energy saving performance of lubricant. The lubricant oil composition is characterized in that a lubricant base oil is blended with a viscosity index improver of 30 or below PSSI so that the viscosity index of the composition is 160 or higher and so that the ratio of 100°C kinematic viscosity drop after shear thereof is 15% or below.