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otrfun's avatar
otrfun
Explorer II
Dec 14, 2016

Most Common Method Used to Winterize?

Just curious how many folks drain their freshwater (FW) tank, then refill the FW tank with RV antifreeze to winterize their system? I tried this method for the first time a week or so ago. It took about 4 gallons of antifreeze to get the antifreeze level in the FW tank high enough so I didn't pull air into the water pump.

With my past trailers I winterized using a valve operated Y-adapter on the intake side of the water pump. It usually took only 1-2 gallons of antifreeze with this method. This method left me a little uncomfortable because it left the hose from the pump to the FW tank vulnerable to freezing.

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