Originally Posted By: FlyPenFly
Excessive ZDDP will prematurely wear your engine.
Motorcycle oils like M1 V-Twin have a lot of zinc (1750 ppm) and I've never heard of them causing problems. Same with my regular Penrite brew of HPR-30 at 1570 ppm zinc, this is pretty much double the regular ILSAC zinc limits.
I think you would need silly high amounts to cause any ZDDP related problem.
Having said that, most Euro 0W-40 oils like M1 or Edge have about 1000 to 1100 ppm zinc, which should be plenty for most applications. For comparison M1 AFE has "only" 750 ppm zinc.
Excessive ZDDP will prematurely wear your engine.
Motorcycle oils like M1 V-Twin have a lot of zinc (1750 ppm) and I've never heard of them causing problems. Same with my regular Penrite brew of HPR-30 at 1570 ppm zinc, this is pretty much double the regular ILSAC zinc limits.
I think you would need silly high amounts to cause any ZDDP related problem.
Having said that, most Euro 0W-40 oils like M1 or Edge have about 1000 to 1100 ppm zinc, which should be plenty for most applications. For comparison M1 AFE has "only" 750 ppm zinc.