GC 600 in winter season

[alex_tesoi]

Since the water tank is outside the car, what should be the the minimum outside temperature to travel with GC 600 during the winter? (and of course to use the water)

 

[Soton Campers]

The fresh water tank is inside. Only the grey water tank is outside.

 

[Jester]

Since the water tank is outside the car, what should be the the minimum outside temperature to travel with GC 600 during the winter? (and of course to use the water)

As Southampton Campers says,
The internal water tank has a ducted heating pipe along side, so if the heating or hot water is on you should be fine. Hopfully .