I bought a truck camper that advertised 18 gal. black tanks. Could only get 14 gal. in it before it reached the top. Called the owner of the company and he went to the warehouse and started filling the tanks and he could only get 14 in them. He called the tank manufacture and set 'em straight and they came up with a new tank that was legit. They installed one free in my camper. If you can remember Cameo came out with the wrong specs and replaced a bunch of tanks on their fifth wheels. Funny how you never get one that holds more than it should.
