I live in Western pa and for the most part this winter has been very mild. very little snow and above normal temps. I want to take advantage of this weather and go camping. I don.t want to dewinterize it because winter will come. My question is . If I hookup to city water and use the toilet only. Do I have to winterize the whole HM or just the toilet when i get home. I allready have the water lines filled with antifreeze. If I only use the toilet the city water should not run in any other line since they have antifreeze in them. Does this make since or is this another dumb idea.