I have a 2010 double cab TRD. I just purchased a new 28' travel trailer at 4400 lbs (dry weight). Typically, I get 18-19 mpg, but on our 150 mile excursion with the new camper, we got only 8.5 mpg. We did drive a little slower on the return trip, which helped, but not significantly. Ant suggestions???????
BTW, the truck towed the trailer, beautifully......only problem was mpg!