Lubricating oil composition

Details Lubricating oil composition Lubricating oil composition

1998-09-14

2000-01-04

McAvoy, Ellen M.

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Heavy metal or aluminum in an organic phosphorus compound...

508378, 508584, 508585, 252 74, 252 75, C10M14110

Patent

active

060109882

ABSTRACT:
A lubricating oil composition for a wet clutch, particularly for an automatic transmission, which comprises mineral oil, synthetic oil or a mixture thereof as a base oil, and which contains 0.1 to 4.0% by weight of at least one compound selected from the group consisting of calcium sulfonate and calcium phenate, 0.1 to 0.5% by weight of zinc dithiophosphate, and 0.1 to 1.5% by weight of a bisphenol antioxidant, each based on the total weight of the lubricating oil composition. The composition has excellent initial anti-shudder properties, anti-shudder properties of long duration, and good thermal-oxidative stability.

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patent: 4528108 (1985-07-01), Grover
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patent: 5108634 (1992-04-01), Seiki
patent: 5198129 (1993-03-01), Hata
patent: 5262073 (1993-11-01), Schmitt et al.
patent: 5328620 (1994-07-01), Ripple

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