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i resisted towing a vehicle for years. i relented and now confirm what other class A owners had advised: don't worry about it. you get used to the larger inertia. And biggest surprise--no fuel mileage penalty.
My 32' diesel pusher (18000 lbs) with 5.9L Cummins (12valve) could always be counted on for 10mpg. Now towing a Honda fit (2200 lbs) the mileage varies between 9 and 13. The variation seems to be wind conditions more than elevation changes. A simple bump-up of the fuel plate was also made which increased the top rpm from 2400 rpm to 2500 and seems to have increased the torque on hills. I am surrounded
by mountains here in Las Vegas.
Overall economy has increased. My mechanic believes that towing a vehicle behind a box reduces the drag. So the idea of towing an aero trailer is probably is the best way
to improve economy.
The Allison 545 has a very sloppy torque converter. I would like to add a lockup but don't know how. wrw
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