[C3L1CA]

I've always run M1 10w-30 in my car and I've been pretty lucky. Motor has around 10k since the stock rebuilt and has usually been run at around 450-480awhp mark at DB. It seen as high as 597 for one nitrous pull and when I usually spray I would think it should be around that 550awhp mark at DB. I've been lucky and will switch to a heavier weight if I ever have any money to build a motor.