11-20-2019, 01:26 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
No issues at all.  If you want to reduce your theoretical wear curve shoot for a ZDDP value of greater than .12 as a percentage of weight. Try and keep your number below .19 as there tends to be a slight uptick in wear with the Alkyl flavor of ZDDP starting around that point. The Aryl flavor starts an uptick pretty quickly after reaching the .12 value, and you'll sometimes see a reference to that misquoted in some of the engine forums that don't distinguish the two. I think almost all the ZDDP supplements are of the Alkyl variety. I know GM EOS is (or was back twelve years ago when I bought a couple of cases, they changed their formula though shortly thereafter). I still put a bottle of that in with my Brad Penn and my numbers come back around .17 -- remember, your ZDDP gets used up, but if you don't have a solid flat tappet cam it doesn't really matter much anyway. |
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