LUBRICANT COMPOSITION Russian patent published in 2015 - IPC C10M107/02 C10M111/04 C10N20/02 C10N30/02 C10N30/06 C10N40/25 

FIELD: chemistry.

SUBSTANCE: invention relates to a lubricant composition for use in a crank case, which contains base oil and at least one additive, wherein the base oil contains more than 80 wt % base oil produced via a Fischer-Tropsch method. The lubricant composition has kinematic viscosity lower than 5.6 cSt at 100°C (ASTM D 445 test), Noack volatility (ASTM D 5800 test) lower than 15 wt % and high temperature and high shear (HTHS) viscosity (ASTM D 4683) lower than 2.0 cP. The invention also relates to use of said lubricant composition in a crank case to improve fuel efficiency.

EFFECT: obtaining a low-viscosity lubricant composition, which simultaneously has desirable properties for saving fuel, desirable anti-wear properties and Noack volatility properties.

10 cl, 3 tbl