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Old 09-23-2018, 12:05 PM   #1
1 Rivet Member
1980 22' Caravelle
Frederick , Maryland
Join Date: Apr 2009
Posts: 10
AS Water System Antifreeze Lifespan

Can anyone tell me how long antifreeze is good for after it is added to protect an AirStream water system from freezing? I have had some health problems and haven't had opportunity to replace it for some time.

Ed Thompson
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Old 11-04-2018, 06:29 PM   #2
3 Rivet Member
1978 Argosy 27
Currently Looking...
Elk Rapids , Michigan
Join Date: Jun 2017
Posts: 171
Images: 7
There shouldn't be any problems with anti-freeze not working over time, the ethanol or propylene glycol won't change into water and break your pipes. If it was winterized properly you should be fine indefinitely. There are plenty of other things that cause problems in storage though, especially the ones with tails

If you're worried, you could just drain it out at the low point. Any areas that don't drain completely will still have anti-freeze in them.

Hope your health improves soon and you can get out on the road again. For my money the best anti-freeze is taking the trailer to a place that stays warm in the winter


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Old 11-05-2018, 11:34 AM   #3
1 Rivet Member
1980 22' Caravelle
Frederick , Maryland
Join Date: Apr 2009
Posts: 10
Thanks, John

I got a response from another A/s list and he made it a joke. "You mean it might go bad??? Ha ha ha!!!" Your response was sane and to the point. I appreciate sanity and knowledgeability more the older I get. I will "winterize" it after the first of the year by going to Florida. In fact, I plan to move there next year. Thanks again. Ed
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Old 11-05-2018, 11:47 AM   #4
Half a Rivet Short
2017 30' Classic
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 8,894

Stuff does indeed happen. Even automotive anti-freeze has a finite lifespan. If it's over about 4 years old, it's probably worth replacing it.

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