| abstract |
The present invention relates to a kind of lubricating oil composition for lubricating machine motor vehicle engine.The lubricating oil composition of SAE viscosity grade 0W20 provided by the invention is advantageously for the four-stroke gasoline engine of motorcycle is equipped with the diesel motor on the power car of exhaust gas aftertreatment to provide high fuel economy and high wearing and tearing inhibition with being arranged on, described lubricating oil composition comprises base oil and binder component and demonstrates the viscosity index of 200-240, at 150 DEG C, be not less than the HTHS viscosity of 2.9mPas s and be not more than the NOACK vaporization losses of 13%, described binder component comprises nitrogenous ashless dispersant, the purification agent of alkaline including earth metal, phosphorous wear inhibitor, oxidation retarder and viscosity index improver. |