Rwgarrison23
Senior Member
I realized my 6.4 takes a special oil. The 0w40. My 1st 2500 and only had it for about a week now. If I cant find any local then I'll be forced to.buy from dealer or order online. If I order online, what about amsoil? Their 0w40 signature line oil. Good up to 15k to 25k miles. I wouldn't go that long with out changing it. But has anyone else used amsoil and their filter? How long did you wait until to change it? Use the factory oil life monitor?