Reply to thread

Message: <blockquote data-quote="Shocker98GT" data-source="post: 400488" data-attributes="member: 9697">^x2New EPA regs mandated a large reduction in ZDDP (Zinc Dialkyl Dithio Phosphates) because as an engine wears out and consumes more oil, the burnoff of zinc and phosphate could potentially damage catalytic converters. Boo freaking hoo, so the emissions a-holes decided that ZDDP had to be substantially reduced in regular motor oils. BTW, ZDDP is your main anti-wear, anti-corrosive, anti-oxidant additive in oil . The reason that guys are puking so many bearings and valvetrain components nowadays (especially guys with flat tappet cams, etc.) is because they've substantially reduced the PPM of ZDDP. Diesel oil, however, still has these additives and this is why lots of performance guys are using it. Add the fact that Rotella T is dirt cheap, and it really is win-win. Amsoil is one of the few oils on the market that still has a good amount of ZDDP in the additive packs.</blockquote>