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#1 (permalink)

07-15-2008, 08:22 AM

CobraEd

CC Member

Join Date: May 2000

Location: Northern VA, VA

Cobra Make, Engine: Classic Roadsters

Posts: 2,765

Not Ranked

Royal Purple

Apparently Royal Purple does have a fair amount of zinc from all I have read.

Also check out this independent wear test. Royal purple is one of the highest rated but is at the bottom of the attached list.

http://www.animegame.com/cars/Oil%20Tests.pdf

.

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Last edited by CobraEd; 07-15-2008 at 10:04 AM..

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