I would like to expand on the question about this. For those that run on propane about how long will a 30# tank last. And my other question is in reference to turning off propane while refueling. Now I do understand what all are saying about keeping it on, but do you just shut off the tank or go in to your TT and turn off the refrigerator. Our refrigerator sits on the opposite side of the TV fuel tank. I have never as yet run propane while going down the road so want to make sure if I do that I am keeping myself and others safe at the pump. Thanks.