Seems like it's ok until it goes below freezing for a day  or two,
continually.  Then you'd better clear out the lines to be safe.  I've just
emptied my tank, then run the pump dry with good results for the past few
years in the Northwest.  Do that same thing with my Alaskan camper, though
some RV anti-freeze in an almost empty tank and then run the water pumping
and drain systems till that is drawn into the lines, that couldn't hurt and
might save some work come spring..
  Don Hanson
For real winter camping, where it remains below freezing, I don't use the
vehicle water system...Jugs are easier to keep liquid.
On Fri, Oct 30, 2009 at 10:31 AM, Rocket J Squirrel <
camping.elliott@gmail.com> wrote:

> On 10/30/2009 9:33 AM mcneely4@cox.net wrote:
>
> I was more concerned about a winter camping trip
>> with water in the tank and lines.  I plan to go to Big Bend National
>> Park over the winter holiday.  Might freeze then, I thought.  Hence my
>> inquiry.  David
>>
>
> Well, that's different. And a good question. I'd not expect the main tank
> to freeze but the lines seem at risk. I'll bet our Canadian and Alaskan
> friends will have some insight.
>
>
> --
> Mike "Rocket J Squirrel" Elliott
> 84 Westfalia: Mellow Yellow ("The Electrical Banana")
> 74 Westrailia: (Ladybug Trailer company, San Juan Capistrano, Calif.)
> Bend, OR
> KG6RCR
>