[CattleHauler]

Originally Posted by sootyoil

I have 5w30 Amsoil in my diesel with no oil change since feb 2004 40,000 miles ago, still in excellent condition, verified by Oil Analyzers, Inc. | Oil Analysis Services
my friend has 10,000 on his 6.0 with Amsoil PCO 15w40 and his came back good for continued use, from Oil Analyzers, Inc. | Oil Analysis Services
Rottella oil? that is like a sheep in the middle of the herd,

40,000 miles with no oil change?...sounds stupid if you ask me...