Why are people creating problems? You don't have to do anything with propane in the winter. Think about it, people in cold remote areas use propane to heat with. Just read where some guy thought he had a problem with RV antifreeze in his water heater. So what! Another guy was worried because his tire pressure went up when the tires warmed up, normal. That expansion, due to heat, is allowed for, that's why pressure is read cold.