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AMSOIL 15W40 User
I run a 2011 F-350 DRW 6.7 pulling a 2014 3850FL. Bought the truck with 33,000 miles on it and immediately changed oil to AMSOIL 15W40. I run oil analysis at each oil change to track metal wear and other issues. Attached is a copy of the last oil analysis and history, I am happy with the performance.
Tim
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