While reading JP magazine a subscriber stated that one of the major performance engine shops in his area stated that they where seeing increased wear and damage to older engines using flat tappet cams due to newer oil formulations containing little to no zinc additives in them since newer engines do not require as heavy an anti-wear package as the older engines did. Has anyone else seen any information on this subject and if true is there an additive product that older engine owners should be using?
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