I went on vacation over the forth and I towed a 27' travel trailer weighing about 8500 lbs. She pulled great. We went about 700 miles and I averaged about 7 miles per gallon. Thats without my speedo being changed for my lift. I pulled one big mtn. pass and I was able to hold 60 mph in 2nd gear. I'm really glad I had the tranny cooler on my Titan because my temp guage went to hot twice. All and all was well and once again I'm glad I baught a Titan!