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Old 09-13-2017, 08:41 AM   #1
Mike from Canmore
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2018 27' Flying Cloud
Calgary , Alberta
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Posts: 40
Winter Travel

REALLY basic question- How do you keep your holding tanks from freezing while driving/camping in below-freezing temperatures? It won't be long before the snow flies in Canada, and I'd like to extend our season as long as possible . . .

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Old 09-13-2017, 08:49 AM   #2
Half a Rivet Short
2017 30' Classic
Carlisle , Pennsylvania
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RV anti freeze seems to be one option. It probably does not help the bacteria in the black tank, but neither will freezing One often overlooked issue is the intake plumbing and residual water in things like check valves. Another is the dump valves freezing independent of what's in the tank ( = run a bit of the anti-freeze through them). Lots of things to think over .....


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Old 09-13-2017, 08:56 AM   #3
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2017 25' International
Port Dover , Ontario
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Originally Posted by Mike G View Post
REALLY basic question- How do you keep your holding tanks from freezing while driving/camping in below-freezing temperatures? It won't be long before the snow flies in Canada, and I'd like to extend our season as long as possible . . .
Running the furnace in our International while driving will keep the fresh water tank and inside plumbing from freezing while driving. When it is below freezing we avoid using the grey and black tanks and leave them winterized.
Ray B.
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Old 09-13-2017, 10:03 AM   #4
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1998 25' Safari
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We keep a jug of rv antifreeze beside the toilet and use it to flush until we get far enough south.
Doug & Terry
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98 Safari
1950 Spartan
1966 Globetrotter
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Old 09-13-2017, 12:43 PM   #5
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Lexington , Kentucky
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Our 23' has heaters in the gray, black and fresh tanks. They run on 12v, batteries will last about 3 hours, the owner's manual says. While traveling, the TV would provide some power to them, but when we travel I always dump the holding tanks before leaving a campsite and then add some RV anti-freeze to them. That way I don't have to worry about them or running the batteries down.

For the toilet, like others, we carry RV anti-freeze for flushing. Mostly, we depend on rest areas and Cracker Barrel rest rooms, rest areas being the best since they have dedicated cleaning staff.

For fresh water we just buy gallons of water for drinking, don't use the fresh water tank. A little residual water in any of the tanks won't be a problem for them, but pipes can freeze. It's best not to use the plumbing if you can avoid it. If you have room for a small compressor you could blow out the lines before moving on to the next stop.

I would think that pipes inside the trailer would be OK for travel unless you're in extreme cold or very long trips. You could also keep the furnace running.

Rich & Yvonne
2006 Safari SE -Dora-
2004 4Runner SE

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