Well I've look all over the internet i keep getting links to buy one. The fuel gauge went out well all the stuff doesnt work on the dash I dont know hwo fast im going the odometer doesnt work, nothing. So I want to know what the MPG might be. Im moving to Kansas here real quick and Id like to know how much ill be spending in gas. We plan on stopping every 200 miles to fill up, or every time we stop to take a stretch or get abite to eat. The RV has a 440 engine, V8its a 78 so it has quite a few miles on it, what do yall think might be the mile per gallon im thinkin about 13 maybe 15