Originally Posted by astrogiblet
At 70mph on the freeway we get 18mpg in our 2003 Dodge Diesel.
At 80 it goes down to 13mpg.
Pulling our 35 foot fifth wheel trailer with a custom made extension out the back with 12" I-beams and a 6000w diesel generator on it and a 75 gallon semi truck diesel tank, we get around 12mpg.
thats about right on for what my dad was getting in his 03 DRW 3500 hauling 35' travel trailers.. the reports from the chevy / ford guys were single digit MPG's ..