Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - levels of zinc in valvoline racine oil?
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Old 11-22-2007, 07:28 AM
ernkazern ernkazern is offline
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Pick a brand of oil, go to their web site, look up the spec sheet for the oil you're interested in using. Look at the HTHS rating, the higher the number the better it will protect cams and lifters. Example Mobile 1 synthetic, 15-50, HTHS rating 4.5. If you find a higher rated oil let me know.
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