We have '04 Tradition with ISL(370) Cummins, F/L chassis(chassis date July '03). We are about 3900 miles into our Alaska trip with an MPG average of 6.3. In the C/G I met a couple with an '05 Traditio...
I have a 400 hp ISL in a 43' coach and I get 6.2 - 6.3 mpg. It doesn't make any difference if I am toeing my F150 or not. This is my 4th coach, second diesel pusher and I have never goten the mileage others claim on any of them. I don't really care what I get since it still is the cheapest form of travel I'm aware of.