Okay, I get it about the 6 gallons of anti-freeze. But why run anti-freeze through the lines in the first place? Why not blow out the lines and have no liquid at all except in the bottom of the fresh water tank and drain traps? Add anti-freeze only there, and run a bit through the on-board pump and you're done....right? Isn't every rig equipped with low-point drains for both hot & cold lines to achieve complete draining?
Adding: Oh, I just read more replies that beat me here. I see you pre-answered my question about blowing out lines.
