I have heard from my trucker buddies that if you use anything except B20, you take the risk of clogging the whole fuel system of the truck. I use Amsoil diesel additive and a Superchips programmer to get up to 26 mpg on the highway. It is totally dependent on how I place my foot on the accelerator. All the biodiesel around here is CFN and I already had my run in with those idiots. Never again.
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07 Dodge 5.9 Cummins Diesel Superchip and stock until the warranty runs out at 75000 miles
