Wow. I have been wanting a diesel but not now. My 2000 F150 with the 5.4 get 14 mpg and 12 - 12.5 towing the Cobra on a HD car trailer. I'll keep my gas truck.
It might, but go up a grade the diesel is going to be much easier towing. If you don't tow alot gas is probably the better bet, if you tow alot the diesel is the way to go.