Frozen antifreeze?
Last week I winterized my TC and trailer, ie emptied all the tanks (black, grey fresh, hot water), opened the low-drain valves, blew everything out, (with the taps open), with the air compressor, set ...
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Look at the MSDS on RV anti freeze. It gels at 9 degrees. I have posted several times that the RV anti freeze does freeze just not hard. One of the main reasons I don't use it is I winterize and de-winterize several times in the winter. Once it has gelled you may have to wait until spring to get it all out of the lines. YUK!!!!!! I just blow out my lines with air and only put RV anti freeze in the traps, toilet and a little down in the grey and black tank to protect the dump valves. I have a W/D so I put some in my washer and spin it out through the drain to fill that p trap.
