Yeah, I liken it to what it would be like towing an open parachute behind you.

I'm disappointed at the terrible efficiency we're getting from this rig, to be honest. Based on experience I was expecting more like 10mpg. It doesn't make a big difference in cost, but Ford only gave the 6.2L F250 a 30 gallon tank. For something that gets such abysmal gas mileage, that is a really questionable decision. Our last truck, an F150, had a bigger tank even with a shorter bed. I have no idea what Ford was thinking here.