Originally Posted by mtnguy
matt, if you have an enclosed underbelly on your Cherokee with the duct work of your gas furnace running under the floor, running the furnace will help keep that area warm....just in case you have pipes under the floor. That would also help any residual water in the waste tanks from freezing. I know that in my SV 263, it is hard to completely drain the tanks.
Don't know how accurate this is, but the mechanics at the dealership where we bought our Surveyor said that unless they are full, it will do no damage if the contents of the fresh, gray and black tanks freeze.