Originally Posted by Livinglife2
The only safe bet is to re-winterize the lines, fast and easy way is to open the low point drains and drain fresh water tank, then drain hot water tank, bypass hot water tank, put four gallons of pink rv antifreeze in fresh water tank, and turn on pump and open all spouts for a couple minutes till nothing but pink is coming out hot and cold side and don't forget to run the stool, and shower. We pushed it one year and broke every pipe in the camper going off the main line, it only took one night below freezing to screw us. It's way cheaper to buy four gallons of pink than replacing the lines.
I would never put the pink stuff in my fresh water tank. There is no need and you just waste a lot of antifreeze, and make flushing your fresh water tank that much harder....you may have to fill and empty many times to get rid of the pink taste and smell. If you drain the tank, any small amount of water left in the tank will freeZe with no damage. It is only freezing in small, confined spaces that causes damage.
Just add a small take off hose on your FW pump. You can buy these winterizing kits anywhere RV stuff is sold and they are cheap. You drain your lines. Then buy 1 gallon of the pink stuff. Put the hose into the gallon and pump it through your system until pink stuff flows from every faucet, toilet, and shower. Be sure to isolate you hot water heater by turning the valves on the winterizing bypass. Given the small diameter of your water pipes, it usually takes less than 1 gallon to fill your pipes. Buy a second gallon to pour down your sink traps, in your toilet, and some into your grey and black tanks.
Has always worked for me and we usually have winters with some days as cold as -35.