We have a 6.7, 2007.5, 2500 2 wheel drive. Just got home from week on Oregon coast and going to Grants pass area with our 3295rk. Average towing ran about 10.5-11.6 mpg. Not towing ran 19 mpg on trip up to Crater Lake. This is a awesome motor with lots of power. When you hit 4th gear you can feel the toque of the 6.7. I have 33,000 miles on it at this time. And to top it off I pulled into my parking spot at home tonight and wife is telling me the trailer tire is flat. Looking at it looks like loosing air will have to look into tomorrow.
Larry in Olympia
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