
07-28-2010, 04:06 PM
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CC Member
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Join Date: May 2000
Location: Northern VA,
VA
Cobra Make, Engine: Classic Roadsters
Posts: 2,765
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Not Ranked
Not sure about Gibbs, but Brad Penn is not a full synthetic.
Personally I feel that Mobil 1 & Royal Purple are the very best oils on the market. When I add my own ZDDP, I am in my happy place
UPDATE: I just checked Gibbs and it is also not a full synthetic. And, . . I don't know who makes it.
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Last edited by CobraEd; 07-28-2010 at 04:13 PM..
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