Engine oil additive

Details Engine oil additive Engine oil additive

2006-07-11

2006-07-11

McAvoy, Ellen M. (Department: 1764)

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

Lubricants or separants for moving solid surfaces and...

Inorganic compound

C508S171000, C508S369000, C508S371000

Reexamination Certificate

active

07074745

ABSTRACT:
A process and method for manufacturing an improved engine oil comprising mixing ferric fluoride with ZDDP to form an additive mixture, heating the additive mixture to at least 125° C. for at least 4 hours to produce a pre-reacted mixture, and adding the pre-reacted mixture to a fully formulated engine oil not containing ZDDP. Also disclosed is an engine oil prepared by a process comprising mixing catalyst with ZDDP to form an additive mixture, heating the additive mixture to about 60° C. to produce a pre-reacted additive mixture, and adding the pre-heated additive mixture to a fully formulated engine oil not containing ZDDP.

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International Search Report and Written Opinion issued for PCT/US04/34272 dated Sep. 1, 2005.

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