I agree with Polcat, I have a 2007 2wd 5.7 DC with 2200 miles and I just got back from a road trip to charlotte, nc (350 miles round trip) and I averaged 17.4 MPG at 75MPH. This was my first freeway road trip in the truck and I have to say that I, and my coworkers, were very pleased with the truck's performance, comfort and MPG. I do hope that it will get better as I rack up some mileage and perhaps some mods in the near future!
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Originally Posted by polcat
I think what I have got from this tread is that when your truck is brand new, the millage is crappy. That would explain my 16mpg 900 mile trip yesterday. I have just an exhaust system so far. I think I just hit 1500 miles or so on my 2 wheel drive truck. I know I need to ease into the throttle more off the line, but the sound and power is soooo nice!!! lol I hope after this month, when I make the 900 mile trip back, I see a better mpg.
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