Gear oil compositions

Details Gear oil compositions Gear oil compositions

1993-04-01

1994-10-25

Howard, Jacqueline V.

Compositions

Electrolytes for electrical devices

252 515A, 252 56S, 252 56R, 252 496, C10M11102, C10M11104

Patent

active

053586506

ABSTRACT:
A "cold-clash" gear problem associated with vehicular manual transmissions exposed to the cold is overcome by use of a special all-synthetic gear oil composition. The composition is composed of base oil and specified additive components. The base oil is a blend of di-(2-ethylhexyl)sebacate and three hydrogenated poly-.alpha.-olefin oligomers having kinematic viscosities at 100.degree. C. of about 40, about 8 cSt and about 2 cSt in specified proportions. The additive components comprise an organic sulfur-containing antiwear and/or extreme pressure agent, an organic phosphorus-containing antiwear and/or extreme pressure agent, a copper corrosion inhibitor, a rust inhibitor, a foam inhibitor, and an ashless dispersant. The gear oil has a boron content of about 0.0025 to about 0.07 wt %.

REFERENCES:
patent: 5137980 (1992-08-01), DeGonia

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