[sourdough]

I think George is right. It won't take but a few minutes to run to your trailer and perform the blowout and adding some anti freeze. Should be OK in the temps you describe. Beats the heck out of what a dealership will charge for winterizing, especially if you are going right back camping in it when it returns. I've not ever seen a dealership keep an RV in a bay unless it is actually being worked on.