Rhinod,
When I first got the truck in June of 2004 with 141 miles on it (it was a dealer trade and my truck came from a dealer in CT) I was getting 12+ around town and an even 15 highway bobtail. Towing, was about 9 to 10+.
I was thinking, "What in the h#$% have I done to myself.
With 48K on the truck I now get 21 highway, 17 around-town and 15 towing my Wildcat 29RLBS.
I know every drop of fuel that's gone into the truck and the mileages are hand calculated. BTW, when I'm getting 21 over-the-road hand calculated, the display says 23 mpg.
For a 7,500 lb truck, that ain't bad, pardner. Oo.