RussRPJ

17 IMPERIAL gallons. OK, that explains it. Never thought about that! So many different systems of measurement. Remember the crash of the US explorer craft (Viking was it?) into Mars a few years ago? One navigation engineering team used miles, the other kilometers. A billon-dollar mistake!
A plastic gas tank? I have got to get this thing up on a lift to take a peek. Yes, a. 21 gallon tank is indeed a big tank. My full-size pickup is only 5 gallons more.