Long life gas engine oil and additive system

Details Long life gas engine oil and additive system Long life gas engine oil and additive system

2007-01-23

2007-01-23

Toomer, Cephia D. (Department: 1714)

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

Lubricants or separants for moving solid surfaces and...

Organic oxygen compound

C508S460000

Reexamination Certificate

active

09806873

ABSTRACT:
A gas engine oil of enhanced life as evidenced by a reduction in viscosity increase, oxidation, nitration. TAN increase, and TBN depletion comprises a major amount of a base oil of lubricating viscosity and at minor amount of a phenolic anti oxidant and a viscosity index improver, but excluding amine type anti oxydants.

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patent: 5744430 (1998-04-01), Inoue et al.
patent: 5807813 (1998-09-01), Yamada
patent: 6191081 (2001-02-01), Cartwright et al.
Mortier, R.M. Chemistry and Technology of Lubricants, p. 71. Blackie-VCH Publishers, Inc. 1992.

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