So long blue and hello new

nothingbutdarts said

The DEF fluid and it's catalist actually help the manufacturer to cut back on the amount of EGR that is recirculated into the intake, there for with less EGR used there is more power available and it should actually get better mileage then the engines that strictly use just EGR.

What kind of mileage are you getting so far?

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Well so far with the combination of the high loads I haul and headwinds...average was saying 6-8 mpg loaded and empty goes up to around 9-11 mpg. Maybe it will get better over time. I would like to get better mileage and what I'm hearing,by eliminating the EGR and DEF will bring it up some. My old '06 did way better as far as my mileage went.