I have two tanks both bought from Class A customs. The left is a 24 gallon and the right is a 46. A total of 70 or 76 if you want to add in the water heater. The passenger side empties first into the smaller one.
Initially, I tried to use the same ½ inch line for filling and draining but that didn’t work out well so I had to add another ½ fill line to the larger tank. There is no way to fill with a jug. Something that may be necessary in other countries. So far this hasn’t been a problem. They do make a kit for installing a large access hole if need be.
