Lubricant oil composition
AssigneeTonen Corporation
InventorAtsuhisa Kobori
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Abstract
The present invention is a lubricant oil composition comprising a base oil as the major component which contains aromatic compounds at 1 wt % or less and paraffin and monocyclic naphthene compounds at 50 wt % or more as total content, and has a kinematic viscosity of 2 to 50 mm2/s at 100° C. and evaporated quantity of 16 wt % or less by the NOACK volatility test.
Claims5
A lubricant oil composition comprising a mineral oil base oil as the major component, which contains aromatic compounds at 1 wt % or less and paraffin and monocyclic naphthene compounds at 50 wt % or more as total content, and has a kinematic viscosity of 2 to 50 mm2/s at 100° C. and evaporated quantity of 16 wt % or less by the NOACK volatility test.
A method for controlling formation of deposits in internal combustion engines by lubricating said engine with a lubricant comprising a mineral base oil containing aromatic compounds at 1 wt % or less and paraffins and monocyclic naphthene compounds at 50 wt % or more as total content, and having a kinematic viscosity of 2 to 50 mm2/s at 100° C. and an evaporation quantity of 16 wt % or less by the NOACK volatility test.
Dependencies are inferred from the claim text.