Champion 3100 - running an AC - how many hrs out of a tank?

I have the Pinella's kit installed on my Champion 3100. there used to be an online seller that sold them already modified. Works great! I use an external 6 gallon marine tank, and bring along a couple of extra 5 gallon gas cans to refill with. Hose is at least 10' long, so refilling while running is not an issue. Best part is you still have the ability to use your built-in tank with the flip of a lever. So if you need just a couple hours of run-time for some task, you are not forced to always use external tank.