I’m with the “don’t use a cover” crowd. They certainly can trap water inside which can get ugly. But also they can be a colossal pain in the aspect to put on and take off. Lots of folks just blow out their water lines and are happy but it takes a lot of air and it might not always work. Just a tiny bit of water stuck in a valve can crack it. I use the antifreeze but avoid getting any in the fresh tank or the water heater. The latter requires flushing the antifreeze out before opening the bypass valves. Works for me. Every time and no residual pink stuff after 5 minutes of flushing. Personally, I think it’s easier and faster than blowing out the lines. Takes maybe 10 minutes to winterize and I sometimes do it two or three times a season. For my coach it takes about a gallon and a half. 5 bucks.
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