[A/S] Winter camping

["Christopher45103" <blickcd@xxxxxxx>]

Cold weather will be here before we know it, and we plan to take our 
Airstream out in the cold a few times since it has the enclosed 
heated tanks.  

Never done this before (bought it in May) and am in the process of 
getting the furnace cleaned out and tuned up.

Just wondered how people handle this when travelling about two hours 
away.  Starting with a winterized water system, should I fill it with 
water when I reach my destination, or run the furnace to warm the 
interior and fill up the water tank just before departure?  Can I run 
the furnace when traveling?

By the same token, should I winterize it with RV antifreeze before 
heading home, or should it be okay for the two hour return trip 
assuming the furnace was running up until departure?

I know the actual outdoor temperature is a factor here, and I don't 
anticipate going out when it's below 25 degrees F.

Christopher