Re: Propane Hey Hollis, talk about encouragement. I have been using blue ice for 13 years. We leave a small block in the freezer and put 1 sometimes 2 small blocks in the fridge when we travel. I have never had any of our food get warm. Even in the middle of the summer it works great. We have gone up to at least 10 hrs with no problem. Cold liquid items in the fridge help also. Beer, pop, milk, juice. Works for me and I don't worry about that guy pumping gas on the other side of my RV blowing up when my propane ignites a flame to cool the fridge. I read that this was the best way to go way back when I first started to full-time and just got in the habit of doing it. I get a secure/good feeling when I start out for the day knowing my propane is shut off at the tank.