mlts22 wrote:
In true sub-freezing temperatures, don't risk it. Dump all tanks, drain/bypass the water heater (replacing the anode rod if it is a Suburban model), blow out the lines, and then add the pink stuff so it comes out all faucets... yes even the outside shower and toilet. Then add antifreeze to traps/drains and some on the toilet for the seal. Roadtrek uses this method.
I live in Texas, so I can get away with not having to be 100% sure. I run some cheap vodka through the faucets (wholesale, bottom-shelf vodka is cheaper than RV antifreeze here), blow the lines with an air compressor, then call it done. Even 5% alcohol in any remaining water will lower its freezing point to the upper 20s, which is good enough. The advantage of this method is that de-winterizing is quick and there is no oily taste/smell stuck in the lines.
and to the icemaker, at least up to the solenoid.
bumpy
