I looked it up in Chiltons. it said 22/33 Gallons.

Is that two thirds of a gallon or what?
I just put 15 gallons in and it is filled to the top. It was just below half on the gauge, and I know they never lie.

Bob Wexler

 

nope my conversion has the 33 gallon the cargo 22 get it to a 1/4 and fill it up if you put in over 20 gallons ya got the biggie !!!

 

Like spaceblonde said, they came with either a 22 gallon or an optional 33 gallon tank. My G20 conversion has the 33 gallon one, and when it reads a bit below E it will take 30.

BTW those are US gallons.

 

I find that the bottom third of the gauge goes faster than the top third.