Below Freezing While Driving

[CrawfordGene]

The city water inlet has a one way valve that prevents the pump from sending water up that line.

I don't know of any states that have laws about leaving the propane on except in certain situations—the tunnel at Norfolk, Va., is one. Car ferries will require the propane be turned off. Manitoba and one of the Maritime provinces (maybe NS) also prohibit it, but how would they know? I've not seen a propane check station when I've entered those provinces (this is, of course, hypothetical as I would never suggest anyone break the law). Perhaps spoiled food in the fridge would be more dangerous than leaving the propane on, but the fridge stays cold for a long time and you can put frozen gel packs in it.

The best way to keep the water sloshing around in the potable water tank is keep it half full. Plenty of slosh space and enough water to retain some warmth. 2air has posted the grey and black tanks are not heated directly like the potable water tank. I think their contents probably lower the freezing point a bit, especially the black tank. You could put some salt into them to lower it more, though I haven't tried it. It true the water doesn't slosh in the pipes, but so far nothing has frozen.

Gene

[RangerJay]

We also use a remote sensing thermometer - really takes the guesswork out of the discussion.

It is rare that we have had to use the furnace when driving (can only think of once) - but we several times have chosen to turn the furnace on towards the end of a long travel day when the interior temperature is cold (but not freezing) and it will likely take longer to warm up the trailer (i.e. my wife hates a cold bed) than we would like.


Jay

[BillTex]

Originally Posted by CrawfordGene

The best way to keep the water sloshing around in the potable water tank is keep it half full. Plenty of slosh space and enough water to retain some warmth. 2air has posted the grey and black tanks are not heated directly like the potable water tank. I think their contents probably lower the freezing point a bit, especially the black tank. You could put some salt into them to lower it more, though I haven't tried it. It true the water doesn't slosh in the pipes, but so far nothing has frozen.

Gene

I use the pink stuff...not sure a concentration of salt would be a good idea...

Pink stuff will prevent your valves from freezing up also, which are even more vulnerable than the tanks.
No valve...no dump.

Heat on low is the best way to prevent damage to systems. If you have to shut it off due to tunnells,refueling, car ferries, etc, just turn it back on when you get a chance, everything should be OK for an hour or two.

B