I just bought a Trail Lite B+ 211s with 8.1 Chevy engine. This is my fifth motorhome (others range from an old 20' Vagabond, and three Winnegagos, from 19 to 32'. This vehicle is fantastic. I am...
Happyjack's description is right on. I got a 'winterizing kit' from Camping World. Its basically a 2 way valve, and a bypass for the water heater with a siphon tube you install between the tank and pump. Attach the siphon, turn the valve to open it to suction (it also closes the feed from the tank) and then open each faucet until it runs pink. Then pour extra into the drain lines. No problems ever when I do it that way.