I searched the class b forum for mpg related topics and found/read a bunch. First far trip on my class-B, 1990 Ford Econoline 250 Intervec Falcon with Ford's 5.8L windsor V8 No check engine li...
Our Chinook Concourse (dually, Triton V10) gets 10 mpg very consistently. If we hit 9 mpg, the next tank will probably be 11 mpg. I drive maybe 3-5 above speed limit on highway, very little running of the generator. Considering what these things weigh, that's not bad. I once had a 1976 Pontiac Catalina that only got 9-10 mpg.