Internal combustion engine oil composition

Details Internal combustion engine oil composition Internal combustion engine oil composition

1997-10-06

1999-01-12

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...

508591, 585 13, C10M11100

Patent

active

058589325

ABSTRACT:
Lubricating oil composition for internal combustion engines includes a base oil containing (A) 30-98% by weight of a mineral oil having a kinematic viscosity of 2-30 mm.sup.2 /sec at 100.degree. C. and a viscosity index of not less than 100 and (B) 2-70% by weight of poly-.alpha.-olefin, and zinc dithiophosphate in an amount corresponding, as reduced to the amount of P (phosphorus), to 0.02-0.15 parts by weight with respect to 100 parts by weight of the base oil. The composition of the present invention is advantageously used as lubricating oil composition for internal combustion engines, exerting excellent effects in terms of the consumption of the oil composition, fuel consumption rate, and sealing characteristics of rubber.

REFERENCES:
patent: 3151075 (1964-09-01), Butler
patent: 3293181 (1966-12-01), Stuart
patent: 3347790 (1967-10-01), Meinhardt
patent: 3442804 (1969-05-01), LeSuer et al.
patent: 3450636 (1969-06-01), Rausch
patent: 4528108 (1985-07-01), Grover
patent: 5604188 (1997-02-01), Ryan
patent: 5688748 (1997-11-01), Tomizawa

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