I know this is out of the blue but can anyone tell me what size my fuel tank is on my truck. The haynes manual i have shows the same tank i have in a illustration to remove it, but it says location of 20 or 30 gallon fuel tank strap location. I wouldn't know which one i have unless i saw two of this tanks side by side. I would guess they would different sizes. If you have a Haynes manual it'son page 4A-4.I don't think that i ahve any special tank trailer group as an option, but i dould know the interior options are loaded down.
1992D1505.2L Longbed automatic

 

Possibly 22g,have you ever filled the tank from near empty.

 

in my chiltons CAPACITIES chart..it shows 22gal for your yr and engine designation..2 or 4 wd...


you can always check by the vin#. call dodge or use the vin decoder in the haynes or chiltons book...