Winter use??

In sub-freezing weather, we used our Class C all the time. We flushed the toilet after use with antifreeze*; and used bottled water for toothbrushing, etc; followed by a splash of antifreeze down the drain (left the freshwater system winterized) What a lot of people are forgetting is that there are low-point drain tubes; plus the valves for the wastewater system (and possibly an outdoor shower), that can still freeze.

* We DID have one trip home in single-digit temps where we used a "luggable loo" portapotty because urine will freeze at about 28 degrees