I just read an article on how the epa is having the amount of zinc in oil lowered due to it eating up catalyctic convertors. What oil is everyone using? I'm running regular valvoline, but they said it will effect flat tappet cams more than anything since they rely on the zinc to coat the lobes. When my car was turbo, I used to run rotella diesel oil due to the high zinc content. Just wondering what everyones take is on this. Damn epa!!!!