Sub-freezing weather and Exposed Tanks.
We are about a week into a three week fishing trip in Montana. We are currently in Missoula. Night time temperatures are forecast to be in the low 20's all next week. Our black and gray tanks a...
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Will you be at a campground with a dump station or hookups? If so, you could just dump your holding tanks before going to bed each night that is shaping up to be cold.
I also suspect you'd be fine without doing anything, but I also won't be around to worry about the mess if that proves to be incorrect. RV antifreeze wouldn't do all that much in the holding tank unless you put a whole lot down. I would suggest rock salt as a better antifreezing agent to use in this case. Even if things froze, though, I don't think it's too likely you'd suffer holding tank damage with your setup. If you have plumbing runs exposed underneath for the fresh water system, they would be a much greater concern for me.
I also suspect you'd be fine without doing anything, but I also won't be around to worry about the mess if that proves to be incorrect. RV antifreeze wouldn't do all that much in the holding tank unless you put a whole lot down. I would suggest rock salt as a better antifreezing agent to use in this case. Even if things froze, though, I don't think it's too likely you'd suffer holding tank damage with your setup. If you have plumbing runs exposed underneath for the fresh water system, they would be a much greater concern for me.
