Yea, it is the 6.0 liter. Everyday driving gets me about 17.5 mpg. Towing, I can't really say for sure because I never use a full tank when I tow that I don't have regular driving miles on the same tank full. In those cases I have gotten 14.5 mpg. I have heard other f250 owners say they get as little as 8.5 mpg towing to 11.5. I wish I could be more help here. No matter the mileage, that truck will pull the guts out of a 12,000 pd trailer. I pull my rig up a KY parkway with an automatic tranny, in overdrive, cruise control set to 75 and it never downshifts or loses any speed. One day I passed a Corvette going 75 pulling my tractor and everything I own. You should have seen the look on that guys face. /forums/images/graemlins/grin.gif
Don't get much better than that.
Jeff