Can anybody tell me how big the gas tank is on my 1990 F350, 24 foot Minnie Winnie it is on a Ford chassy.?

Answer 1

it might be in the owners manual, but the best way is to measure it, length x width x height = cu ft (use decimal feet)

and then using
1 cubic foot = 7.48051945 US gallons, just multiply by this

example 1.5 cu.ft. = 11.22 gal