I have had a few motorhomes and campers over the years and I really love my 2008 811 queen Northern Lite, but it has more water valves then a big motorhome. I am able to drain the tank, drained the...
When I was in California, we had morning freeze that occasionally would last for couple of days. I never winterized the tanks, but would drain the pipes. Most RVs have special drain valves, so it takes seconds to open them. Tank with water takes deep freeze or light freeze for days to froze.