It gets well below zero here and I don’t use antifreeze. I have not had any problems with just draining when storing the TM. Don’t forget to remove both the inside and outside shower heads plus the sink sprayer and, be sure to drain the hot water tank. The only time I’ll use antifreeze is if I am going to be using the TM when it’s that cold, then I do use some of it. I’ll prime the toilet with 2 gal. of –40 windshield washer fluid, lots cheaper than RV antifreeze and works just as well and I’ll pour a gal or two down the sink drain to help keep the gray water tank and sewer valves from freezing, although I try not to use the sink drains.
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