I have a 2500 HD Gas. I thinking abouting getting a diesel. With my truck now I am getting about 10 mpg pulling and about 13 miles in the city limits. I pay approximately $100.00 to fuel the truck....
I figure my break even point from my F150 5.4 to my 2500 CTD is .50 a gal in cost difference. If I drive equal amounts for towing and DD then I break even. The more I tow the better it gets. The more I DD the worse it gets. That's using a 2-2.5 mpg difference towing and .50 max fuel difference. The 5.4 and CTD both got the same non towing.