Quote Originally Posted by Paul 631 View Post
The non-severe oil interval is already 10k miles, how long do you amsoil guys stretch it to?...
Amsoil says we can change filters 2 times a year and do a yearly oil change. I'll be changing out my 5w20 amsoil for 5w30 once spring comes. Then back to 5w20 next winter as long as I'm not burning any. No clue on how many miles I'll be putting on it, but Amsoil has never let me down.