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Old 04-29-2009, 08:15 PM
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Quote:
Originally Posted by patrickt View Post
The literature suggests that 1200ppm zinc is sufficient for solid flat tappet cams and the benefits begin dropping off at around 1900ppm. If you don't have a solid flat tappet cam then any of the good oils will work just fine.
Even before the restrictions, no oil ever had more than 1400 PPM. Levels at and above 1600PPM have been associated with corrosion issues. There is no reason to run any exotic combination of anything. Just use a CI-4 or CJ-4 rated oil (still has 1200PPM).There is soooo much B.S. out there. This subject has been beaten to death.

Jim
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