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Max out the tire pressure if you can and put Amsoil in all places where lubricants are in. The Amsoil will reduce the friction on the engine and transfer cases. I'd heard of people with Ford F-350 7.3L duallys getting 5 MPG more from switching to Amsoil. I heard of another guy with a Dodge Cummins Turbo-Diesel getting 4-1/2 MPG more.
Try it. If you don't like it, go back to what you are using now.
Click on the Amsoil sponsor button.
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