I can easily afford 6-7 mpg in a 45' going 70 mph.
As an engineer it's a challenge to beat the odds. I averaged 8.8 in my 41' DP pulling a car including Gen usage. I've done mods on the intake, don't carry a bunch of junk around, antipate hills and stops, never drive in packs. Don't idle. (Really bad on DEF engines)
Why do I want to pollute more, spend more, waste resources?
2015 Fleetwood Discovery 40E on a Freightliner XCS chassis with a Cummins ISL9 pulling 1 and/or 2 motorcycles, '07 Honda Accord OR a 17' Runabout Boat.