Alright... Left TN a little after 6 am, drove 300.5 miles and averaged 8.3 mpg... I ran 62-65 mph, all in the mountains..mpg was hand calc...EVIC said 8.4, so it is very close to being accurate... Truck towed 5er with very little effort...even the wife was impressed towing up 7% grades at time and the truck keeping speed down when descending 7% grades...I'm really impressed... The air leveling system is the cats meow...and the TH has everything working..., so though I'm really tired and sore...weather was beautiful and all went well... I'm gonna take a nap