
03-17-2014, 09:53 AM
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CC Member
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Join Date: Jun 2007
Cobra Make, Engine: SPF GT40
Posts: 237
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Not Ranked
Have used Delvac 15-40 in my 427 Roush for 15,000 miles now. Mostly street use, but occasional track days. Change oil every 3000 miles. No problems so far.
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