i have castrol 30wt in it and a purolator premium filter on it right now for the cam break in (25 min at 2500rpm). dont have the motor in the truck yet, just checkin to make sure i put that darn rear main in right. have two more filters and castrol 10w30 for break in. run it for 100 miles, change, run for 500 miles, change, change it again at around 1000 miles. then keep running 10w30 till i get 5000-6000 miles on the motor then will probably switch to amsoil 10w30 full syn and possibly amsoil filters.

anybody see anything wrong with that? castrol is pretty much all ive used, it decent oil? for break in purposes? i used to run that monster mobil1 filter on the old motor. but the purolator was half the price for break in. . . should i go get some delo 400 for initial breakin and then run the castrol at the 500 mile change? . . . whew! thats alot of questions!