400 miles per tank!
#51
I'm getting around 330 per tank full. 18" wheels, 6speed w/ mainly highway driving. Average speed around 75. If I drop to 60 I'll get run off the road. The computer goes between 16.5 - 17.5 mpg. It went higher but has dropped down recently. I'm going to try to stay at 70 mph and see how it goes.