This is because propane, like any gas, will expand when it's subjected to high temperatures. If you fill the tank all the way, there's no space for it to expand when it's heated up and the tank ...

"So I invented the HOOK UP FOR R V PROPANE TANKS. My compact and space-saving design would be easy to set up, and it eliminates the hassle of hauling extra propane tanks for equipment use." ...

How cold is too cold? The cold threshold for propane is about -44°F. You won't worry about propane freezing, but with very cold weather, the propane remains in liquid form and cannot vaporize to ...