Winterizing An Already Frozen Truck Camper .... Doh!

That toilet valve is particularly vulnerable , it is usually a low spot . For years I just blew out the lines , poured some antifreeze in the traps and all was good , then one year it wasn't . Now I run enough antifreeze from the pump to the toilet and it hasn't happened again . Don't forget the sprayer if you have one , another trouble spot .