Frozen Anti-Freeze?? - Escape Trailer Owners Community

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Old 11-24-2013, 03:23 PM   #1
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Frozen Anti-Freeze??

I went to visit the trailer today, and pull the batteries out for the winter. While I was putzing around, I noticed that the anti-freeze I had left in the toilet bowl (maybe ½-1 cup?) was frozen solid. luckily I did the winterizing by blowing out the lines with compressed air, and then pouring antifreeze down the drains and into the gray and black water tanks. So I don't think the water lines will freeze, and if the trap under the sink freezes, I think I could replace it fairly easily.

But I was very surprised to see the pink stuff frozen. I thought it would remain liquid until -50 like it says on the bottle. I didn't dilute the stuff. Do you think I could have gotten a bad batch? How worried should I be?

The temperature here this morning was about 10 degrees fahrenheit.

Thanks much.
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Old 11-24-2013, 03:50 PM   #2
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I have never seen frozen rv antifreeze, like the label says -50 is the freeze point. Do not know what you are using but I'd go get another type and pour down the drains, before tonite.
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Old 11-24-2013, 04:47 PM   #3
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Jim,

I used the CAMCO "full timer's choice" -50 antifreeze. Got it from Camper's World in October. I have spent the last hour googling RV Antifreeze and learning what I can learn about it. According to This Post RV antifreeze freezes but doesn't expand. There are a couple of other posts that differentiate the "freeze point" from the "burst point" and indicate that it isn't uncommon to have frozen pink stuff at 10 degrees. There are some other posts that talk about ice crystals starting to form at 10 degrees, and freezing solid at -10, but apparently it contracts until it hits -50. I also sent an inquiry to CAMCO and we will see what they have to say.

The good news is that it is somewhat warmer today (31!) with a forecast low tonight of 25. I may go to Homeless Depot and buy a jug of the DOW antifreeze they sell and add it to the traps.
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Old 11-24-2013, 04:49 PM   #4
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learn something new every day, thanks for the quick lesson, I'll have to remember that.
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Old 11-24-2013, 04:54 PM   #5
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Interesting Leon. Sounds like any propylene glycol RV antifreeze is going to do the same thing, so maybe the DOW will look the same -- be interesting to hear if you find any difference.
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Old 11-24-2013, 05:15 PM   #6
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I have found some similar posts about the Dow Antifreeze too. So your are right, Eric, sound like it is common to all the propylene glycol antifreezes. I will let you know what the CAMCO folks have to say for themselves.

I am not ready for this winter stuff yet. It is only November and Lindy and I are already getting itchy feet. So today I sent a note off to the campground in Osoyoos to make reservations for the rally.
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Old 11-24-2013, 10:38 PM   #7
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Just when I thought it was ok to ignore the weather. (!)
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Old 11-24-2013, 10:50 PM   #8
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I think quite a few of us have learned something! Nippy City!
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Old 11-25-2013, 06:22 PM   #9
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Jamie...
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Old 11-25-2013, 06:25 PM   #10
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Sweet - thanks very much for the efforts! j
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