We leave in Dec-early Jan from Central Canada and our cold is usually cold here. We just don't bother putting water into the rig, leaving it winterized, until we get into KS or NM which takes 2 days. We use the toilet with chemicals and water (taken in containers), if necessary en route but try to use our fuel and lunch stops for bathroom breaks or Walmart and Flying J's at nights where we usually stop. When it's cold you don't sweat too much so we manage without showering until the second night when we put water in the tank. Even though I don't think we may have a freezing problem, I won't chance it. It;s great fun being inovative, eh?
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