What are the thoughts on putting antifreeze thru the lines, then draining or using the pump to remove most of the antifreeze? There wouldn't be any water left in the lines, only a small amount of ant...
I don't winterize anymore since I'm in the lowlands of AZ. but before coming down here for the winter I would drain the water from my coach (including the hot water tank) take my coach out for a drive up and down hills then I would put the pink stuff in. Never had any problems!