Poor to manageable, that isn't too promising! What would make me gain oil? All I can think of are leaking head gasket and bad injector spray pattern. Is there something else that could cause it? Thanks for your reply, starting from scratch again, hope the 6.4 has a better track record than the 6.0!

Hey all, my name is Willie and I just found your forum. I'm a tree guy in Southern Oregon and just bought an F550 with a 6.4L, auto tranny and 4x4. I'm upgrading from an 01 Cummins and haven't dealt with Powerstroke since their early days. Anyway, I hope you folks can tell me about common...