LUBRICATING OIL COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a lubricating oil composition for an internal combustion engine that improves fuel efficiency and has the primary objective of driving a generator.

SOLUTION: The lubricating oil composition comprises (A) a base oil being a hydrocarbon base oil having a ratio (CA/CB) of the proportion (CA) of the component having a carbon number ≤24 of the carbon number distribution obtained by gas-chromatography distillation to the proportion (CB) of a component having a carbon number of ≥25 of ≥2.0; the ratio (Vs/Vk) of the high-temperature high-shear (HTHS) viscosity (Vk) at 80°C to the HTHS viscosity (Vs) at 150°C of the lubricating oil composition is ≥0.4; and the kinematic viscosity of the composition at 100°C is ≥5.2 mm2/s and ≤8 mm2/s.

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