Hey wondering if anyone else has heard this, i am not sure if it is just B/S or if it is true. i have heard it now from 2-completely diffrent sources: NAPA and my engine builder. i was told they took out the Zinc (?) from motor oil so now vehicles with flat tappets (lifters) are eating the camshafts- i am not sure how long it takes to destroy the cam?? but i think i heard a diesel oil still has this Zinc-- also there is a Penzoil racing oil that still has it but is hard to find.
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