My problem is the grey line extends maybe 2 feet out of the enclosed underbelly before the grey valve, so there is a lot to unfreeze. Thia seems like a bad design that defeats the purpose of enclosing the tanks, since the bottomn 2' of the line is going to freeze right up anyway. It's going to take more than a little hot water in the tank to get through that.
When I talk about boondocking in this weather, in thinking more of Walmart and less remote wilderness, so leaving the valve open probably won't be appreciated
. I suppose if it's a short trip I could just let it freeze and then unthaw it when I get home, but I'm not crazy about that idea.
I don't suppose there is any way to keep the last 2' of line full of antifreeze, since it will just dilute with whatever we put in the tank