Quote:
Originally Posted by Lord Tauk
I have Amsoil 5W-40 in mine right now.
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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,
