[itSSlowZ28]

i have a performabuilt level 2 in my car. from what i've always been told, and what performabuilt recommends, regular non-synthetic atf is the best to run in it. i've also heard if its slipping the old atf has a tendancy to hold it together. don't know how true that is. but if i was you i'd be saving for a new trans and convertor