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Old 09-12-2016, 07:55 AM   #11
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The RV Doctor: Re-using RV Anti-Freeze

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Old 09-12-2016, 03:16 PM   #12
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Thanks to everyone for your input and suggestions. Still semi laid up so knowing I don't have an impending crisis really helps.


2014 390RB-60 "The Shire"
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Old 09-13-2016, 05:31 AM   #13
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That's why you only use Rv antifreeze and not auto antifreeze
I have see 2 year old campers sit on a sales lot with factory antifreeze in them and no problem
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Old 12-20-2016, 02:24 PM   #14
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The temperature lowering ability of antifreeze is a colligative property, that depends only on the number of molecules that are present in the solution. No it cannot get old. The people who make antifreeze want you to think it has a life-span, but it does not. Auto antifreeze contains rust inhibitors that does have a life span due to those molecules working on the steel container they are in, (hence, they tell you dump the whole thing and replace it) but the colligative property of lowering the freezing point never goes away.

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Old 12-20-2016, 02:35 PM   #15
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Originally Posted by nomad297 View Post
I would be concerned with the odor of the antifreeze permeating the plastic water lines if left for an extended period of time. I would drain it, sanitize it, then re-winterize it.

The "pink" would be in there for the same amount of time leaching into the plastic (yes it does) Flushing and re-filling would do NOTHING to slow that down, neither does sanitizing.

I have read that flushing with vinegar when de-winterizing reduces the flavor/odor left behind by the pink....haven't confirmed that yet, it would surprise me,as I doubt it would get it out of the plastic. Once in the plastic it's in there.

If you use pink, get used to it. I use bottled water for drinking/cooking.

Read about our motorhome:
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antifreeze, water

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