| 摘要 |
PCT No. PCT/US94/03367 Sec. 371 Date Sep. 21, 1995 Sec. 102(e) Date Sep. 21, 1995 PCT Filed Mar. 29, 1994 PCT Pub. No. WO94/22990 PCT Pub. Date Oct. 13, 1994A "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 dialkyl ester of an aliphatic dicarboxylic acid having a maximum pour point of about -55 DEG C. and a maximum kinematic viscosity at 100 DEG C. of about 4 cSt, and three hydrogenated poly- alpha -olefin oligomers having kinematic viscosities at 100 DEG C. of about 40, about 4-8 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 %.
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