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...
I had a PW, it averaged 12-14 on the highway, normally 55-60 mph. Mine did not have the high top your picture shows. Around town was about 9-10. I agree with the statement, do about 3 fillups, average the 3. Also, if you were running generator, that figures into it