<strong>Yahoo Message Number: 7684</strong>I have a 97 Magna with propane furnaces. The rear furnace heats the bay with the water tank and system. How do I keep this system from freezing while traveling or do I have to run the rear furnace on the road? I never have run a propane furnace while driving. Also, does your dash heater warm the coach adequately in 0 to 15 degree weather? I...