Hi there!
Thanks again. I took the consensus advice, got a small compressor, blow out valve, and two gallons of antifreeze for the drains.
I did a practice run today, took about 20 mins. All easy enough. Except...
My grey water valve handle is gone (missing completely, second time in two months this has happened.)
It's in the closed position.
I can't dump the tank, I fly out Sunday, and one day of 25 degree nighttime weather is in the forecast now.
Any thoughts about blowing the lines as per normal, then filling the grey tank the rest of the way up with -50 RV antifreeze? That might keep it from freezing?
Thanks for any thoughts you have on this new situation.