Lubricating oil composition for use in final drive

Details Lubricating oil composition for use in final drive Lubricating oil composition for use in final drive

C - Chemistry, Metallurgy

10

M

C10M 141/10 (2006.01) C10M 135/04 (2006.01) C10M 137/04 (2006.01) C10M 137/08 (2006.01)

Patent

CA 2151928

A final-drive lubricating oil composition comprising a base oil and, added thereto, (A) 0.1-5 wt.% of a phosphoric ester, a phosphorous ester or an alkylamine salt of aphosphoric ester, (B) 0.1-5 wt.% of an organic acid represented by the general formula: R1CON(CH3)CH2COOH (wherein R1 represents C1-C18 alkyl or C2-C18 alkenyl) and (C) 3-15 wt.% of a sulfurized olefin or an alkyl sulfide, each based on the whole composition. The composition serves to further improve the transmission efficiency at the differential gear under varied conditions of input torque, input rotational speed and oil temperature as compared with the conventional compositions containing additives based on sulfur and phosphorous compounds, thus leading to fuel consumption improvement.

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