We have a 2011 F350 Diesel DRW 4x4 Crew Cab Long Bed and just got back from Yellowstone about 1400 miles one way. We towed a 2012 3582 that probably weighed in around 14,800 and we got 11.4 mpg running 65-70 mph. I barely knew the Monty was back there. Up and down the hills I let the truck do the work and it was great. This is my first diesel and it has been great so far.
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