So I went to napa to get some royal purple to replace my M1 and noticed they had amsoil in stock and about 6 different kinds. I'm currently running 5w-30 and might make a jump up to 10w-30 since the recient "spun bearing" threads have me scared. I'm stage 2 with a 2003 wrx wagon
and it has 65k on the clock. Full catless and running a typhoon intake with cobb em. Anyone got a suggestion on what to go with?? How about the euro mix 0W-40 stuff?? Why would I want 0 weight at a cold start, wouldn't that damage something??