I just made a roadtrip out to lower ME to pick up a chopper. I live in upstate NY & had to drive over the Berkshires. About a 2k foot elevation. I was hauling a 7x13 enclosed, single axle. Maybe 2,200 #s. Granted I was going over mountains, but even on small hills the Titan kept down shifting. 8 mp gallon!!! Should I have kept the Titan in 4th gear & the tow mode on??? Just curious how other owners haul. Thanks.