Guys I need some experienced advice. 4 years ago my wife and I decided to test the waters and we purchased a 1993 Winnebago Brave with the Chevy 454. Well we are hooked now and looking to upgrade to a larger and newer unit. I have found several gas model and several diesel models that I like but I am undecided which one would be the most economical to run. Towing my Saturn VUE behind the gas model was a struggle on hills which has me leaning towards a diesel, but the price of diesel is scaring me. When I tow I get around 6 MPG with the Winnebago. I guess my question is, would my fuel economy improve running a diesel to the point where it would be as economical or more economical than a gas model?