Importance

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Abstract

A lubricating oil composition that satisfies the fuel efficiency with a low viscosity and a low traction coefficient, the wear resistance, the usability with a high flash point, and the low temperature fluidity, at high levels, having a base oil having a kinematic viscosity at 40° C. of 3.000 mm²/s or more and 20.000 mm²/s or less as a component (A); and a base oil having a kinematic viscosity at 40°° C. of 100.000 mm²/s or more and 2000.000 mm²/s or less as a component (B), the component (A) having a flash point of 180° C. or more, the lubricating oil composition having a content of the component (B) of 0.01% by mass or more and 2.00% by mass or less based on the total amount of the lubricating oil composition, a lubricating method using the same, and a transmission including the same.

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First Claim