Thread: Which motor oil are you using?
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Old 08-04-2011, 07:37 PM
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Quote:
Originally Posted by AL427SBF View Post
More research, Joe Gibbs XP1 ZDDP 5846 ppm, some others even higher, WINNER Joe Gibbs!
once the level gets that high it really only belong in a full on race only engine.
high zinc levels can damage metal. Race engines are disassembled & inspected frequently. Street engines, uhhh, not so much.

Z.
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