Lower-ash lubricating oil having ultra-neutral zinc dialkyldithi

Details Lower-ash lubricating oil having ultra-neutral zinc dialkyldithi Lower-ash lubricating oil having ultra-neutral zinc dialkyldithi

1997-03-20

1998-03-17

Howard, Jacqueline V.

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...

C10M13710

Patent

active

057286566

ABSTRACT:
A lubricating oil composition, having an ash content of less than 1.5 weight percent, has a base oil of lubricating viscosity, and a zinc dialkyldithiophosphate having a zinc to phosphorus weight ratio in the range of from 0.95:1 to 1.04:1.

REFERENCES:
patent: 3691220 (1972-09-01), Horodysky
patent: 4094800 (1978-06-01), Warne
patent: 4101428 (1978-07-01), Crawford
patent: 4592851 (1986-06-01), Stadtmiller et al.
patent: 5326485 (1994-07-01), Cervenka et al.
patent: 5380448 (1995-01-01), Kadkhodayan et al.
patent: 5384054 (1995-01-01), Kadkhodayan
patent: 5604188 (1997-02-01), Ryan

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