I have NEVER used the pink antifreeze here in TX (I disconnect H2O, drain holding tanks & water heater, + electric heater and/or furnace with cabinets open), but if I know we are going to get a hard freeze (< 20), I plug in a floodlight under the unit pointed right at the low point drains. I did have them freeze once and the ice "backs up" into the line horizontal line and impedes water flow to 90 % of the TT.
We have year-round RVin', so we'll be State Parkin' the 24th and just went the W/E before last!
It's been 70-75 degrees here most of the "winter" !!
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