Quote:
Originally Posted by JDakota
Do any of the 15/40 or 20/50 0ils have zinc or should this be added to the oil?
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JDacota yes they do but you will pay a price for it as I do in my 327 300 + hp. Yes the zinc was lowered in some popular oils but still have enough for some small engines. I use Brad Penn 20 - 50. im my Corvette. JMHO