C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
253/119
C10M 145/22 (2006.01) C10M 111/02 (2006.01) C10M 169/04 (2006.01)
Patent
CA 1286651
ABSTRACT OF THE DISCLOSURE The present invention provides a lubricating oil composition comprising 97 to 60% by weight of mineral oil and 3 to 40% by weight of polyester, said mineral oil having a dynamic viscosity at 100°C of 2 to 50 centi- stokes, a pour point (as determined by JIS K-2269) of not more than -30°C, and a viscosity index (as determined by JIS K-2283) of not less than 70. This lubricating oil composition is suitable for lubrication of parts including a wet brake and a wet clutch, such as automatic trans- missions and tractors. The lubricating oil composition of the present invention has a suitable viscosity at high temperatures and further is low in low temperature viscosity. Furthermore the lubricating oil composition of the present invention is excellent in friction characteristics, oxidation stability and also in seal rubber compatibility.
546346
Idemitsu Kosan Co. Ltd.
Riches Mckenzie & Herbert Llp
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