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Old 02-18-2014, 07:15 AM   #1
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Frozen Antifreeze

We de-winterized yesterday and ran all water out of lines and ran iceMaker overnight to clear its lines of pink RV antifreeze. I was surprised this morning when emptying tray that there were about 6 frozen cubes of pink antifreeze. They were just as frozen as the clear cubes. The freezer is set at -2 degrees. ???

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Old 02-18-2014, 07:29 AM   #2
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I have read that the pink stuff gets slushy in the winter. I have often wondered it antifreeze is like the fuel and house insulation where there is different grades in the north and south?

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Old 02-18-2014, 07:30 AM   #3
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Yes RV anti-freeze will freeze, but it does not expand like water (unless the temp is -50) thus no issue with it bursting pipes from expansion as water does.
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Old 02-18-2014, 12:51 PM   #4
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Originally Posted by D Lindy View Post
Yes RV anti-freeze will freeze, but it does not expand like water (unless the temp is -50) thus no issue with it bursting pipes from expansion as water does.

What D Lindy said. Actually, Of all the chemicals and chemical compounds in all the laboratories in all the world. There is but one that expands when it freezes... WATER.

And it is that expansion that causes the problems.
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Old 02-19-2014, 10:31 AM   #5
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In the attached winterizing guide it explains anti-freeze freezing on page 6 under the faq heading.

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Old 02-19-2014, 10:40 AM   #6
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If Anti-Freeze really freezes, then why is it called Anti-Freeze?

Another case of bogus advertising as I see it.

I have never used the stuff. My method of Anti-Freeze is driving south until the outside temps are 70F - 80F with over night lows in the 50's.

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