We have been wondering what kind of gas mileage hit others are seeing when they tow behind their motorhome. I would be especially interested in comparing mpg figures with toad and without toad, as well as knowing the specs on the motorhome and the toad in question. We have a 1985 33' Southwind with a 454 on a P30 chassis and typically average 6.5 mpg without towing. Before purchasing a tow system, I am trying to anticipate what kind of mileage we can expect if towing a 4000lb vehicle on our next long trip. Thanks in advance for your input on this.