
10-11-2007, 06:33 AM
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CC Member
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Join Date: Jul 2006
Cobra Make, Engine:
Posts: 66
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Not Ranked
3924's work well with SCJ heads. Valvoline's VR-1 racing oil has added ZDDP ( zinc) to protect flat tappet cams. Brad Penn racing oils also have a high zinc content. Standard passenger car oil no longer have the zinc, and the diesel oils dropped it about a year ago.
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