Gray water tank anti-freeze
Guess I'll start this. Hate to see a forum with no threads.
I camped a November weekend in 2012, where it got to 9° the second night. Didn't warm up much by the time we were ready to leave in early-afternoon. I tried to drain my gray water, but the slide blade was frozen in-place. Had to have it exposed to the sun for over an hour before I could empty it.
Discussed the situation with some folks, and it was suggested I put some salt in the tank. This year, same November weekend, I dissolved about ¼-cup of salt in about a cup of hot water, then poured it down the sink drain.
Didn't get nearly as cold this year, so I don't have a clue if it would have been enough salt for 10° or colder. Had no problems this year.
It was my 2012 2417, so I only had 8 gallons of effective gray tank capacity. Most TM units have larger gray tanks, so more salt is likely in order on the rest of the lineup.
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