The truck thing is getting old I know but I kind of want to do this another way. I am needing a new truck and don't know about diesel or gas. This is all going to be based on running the truck for 150k miles with fuel being 3.20 for gas and 3.55 for diesel and the truck being run empty bed 14' trailer loaded with 4k pounds and both 3/4 or 1 ton of any brand. Diesel pros are that you will get 15mpg which means you would pay 35,500 in fuel total over the 150k miles. More power which is always a plus. Cons are that it is going to cost an average of 5k more for the truck. The truck is built a little heavier costing more for parts(bigger driveshaft, mounts, few others). The front suspension is going to have more problems b/c of the extra weight. Tires cost more. Oil is every 5k miles but cost 45 bucks b/c of more oil and bigger filters which totals 1350 or the 150k. Gas pros are lower initial cost. Lower weigh for getting stuck off of the road with 2wd(rare but always in the back of my mind). Tires can be lower weight range. Oil change cost 20 bucks every 3k miles which total 1k. Cons are that fuel is going to be 48,000 total for 150k miles at 10mpg. Your only going to have the weight rating for what your doing which leaves no room to grow for the small guys. The truck is almost spent and the diesel is still going strong after 150k. With all that and not talking about brands would you want diesel or gas? Your going to pay 12,500 more in fuel for gasoline. You would pay 5k or so more up front for the diesel truck. The diesel is going to cost 350 more for oil changes or even 500 more. So in total your paying 7k more for a gas truck. MORE FOR A GASER.