Quote:
Originally Posted by jje1960
I guess I'm missing something here.... If your using antifreeze, why are you pushing air through the lines? I've always thought it's 'either or'...
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Me too.
RV antifreeze can gel or partially solidify at extremely cold temps, but it is formulated specifically not to expand. Expansion of water when it freezes is what kills water lines, toilet valves, pumps, etc.
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