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Author Topic: Propylene Glycol vs. RV anti-freeze  (Read 345 times)

Offline HopDen

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Propylene Glycol vs. RV anti-freeze
« on: March 30, 2024, 12:39:47 pm »
I am going to change out the propylene glycol in my chiller. Originally used glycol from Farm&Family that is for ruminants. It worked well but time to change out. My question is, is it acceptable to use RV anti-freeze in place of glycol? Also, for the ones who have a chiller, what product do you use for glycol? Thanks in advance!

Offline denny

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Re: Propylene Glycol vs. RV anti-freeze
« Reply #1 on: March 30, 2024, 12:52:57 pm »
I use this https://www.amazon.com/dp/B01MS8F1UW?starsLeft=1&ref_=cm_sw_r_apan_dp_QZ3Y5PVR5YNTT4JKJAAY

But you bring up a question....how do you know it's time to change? I've had the same glycol in mine for several years.
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Offline HopDen

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Re: Propylene Glycol vs. RV anti-freeze
« Reply #2 on: March 30, 2024, 01:21:34 pm »
I use this https://www.amazon.com/dp/B01MS8F1UW?starsLeft=1&ref_=cm_sw_r_apan_dp_QZ3Y5PVR5YNTT4JKJAAY

But you bring up a question....how do you know it's time to change? I've had the same glycol in mine for several years.

So I took the cover off and it had a bit of dead and floating insects. Took the flashlight to it and could see the same on the bottom. Ive had the same glycol since it was new which is probably 5 maybe 6 y/o. so its best that I change it out imo. In reading today I came to understand that there is a degree of risk of corrosion if one doesn't use an inhibited glycol BUT after removing the liquid and inspecting the chiller, it looks brand new so I don't think there is any corrosion, at least to the naked eye. Thanks for the link Denny!

Offline Semper Sitientem

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Re: Propylene Glycol vs. RV anti-freeze
« Reply #3 on: March 30, 2024, 04:46:51 pm »
I don’t have a chiller, but the answer is a big NO. The FDA exists to educate us and prevent situations like this to occur. Ethylene glycol (auto antifreeze) is very toxic whereas propylene glycol (food grade) is not. No need to cheat death in your endeavor to make good beer.
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Scientists believe that the universe is made of hydrogen, because they claim it’s the most plentiful ingredient. I claim that the most plentiful ingredient is stupidity. - Frank Zappa

Offline HopDen

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Re: Propylene Glycol vs. RV anti-freeze
« Reply #4 on: March 30, 2024, 04:50:36 pm »
I don’t have a chiller, but the answer is a big NO. The FDA exists to educate us and prevent situations like this to occur. Ethylene glycol (auto antifreeze) is very toxic whereas propylene glycol (food grade) is not. No need to cheat death in your endeavor to make good beer.

Thank you for the response but I was speaking of RV antifreeze for winterizing the potable and or gray water systems, not the engine coolant aspect.

Offline Semper Sitientem

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Re: Propylene Glycol vs. RV anti-freeze
« Reply #5 on: March 30, 2024, 04:56:58 pm »
I don’t have a chiller, but the answer is a big NO. The FDA exists to educate us and prevent situations like this to occur. Ethylene glycol (auto antifreeze) is very toxic whereas propylene glycol (food grade) is not. No need to cheat death in your endeavor to make good beer.

Thank you for the response but I was speaking of RV antifreeze for winterizing the potable and or gray water systems, not the engine coolant aspect.

Ah, sorry about that. Propylene is propylene so it should be good.
Confidunt in cervisia nobis

Scientists believe that the universe is made of hydrogen, because they claim it’s the most plentiful ingredient. I claim that the most plentiful ingredient is stupidity. - Frank Zappa

Offline majorvices

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Re: Propylene Glycol vs. RV anti-freeze
« Reply #6 on: March 31, 2024, 07:46:33 pm »
Apparently glycol breakdown can happen due to bacteria. But just check the plato and make sure you are still in the range. If you are, you are good to go!

Offline CFRAZIER77

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Re: Propylene Glycol vs. RV anti-freeze
« Reply #7 on: April 08, 2024, 08:39:25 am »
For what it is worth, I have been using RV glycol for years. 

Offline denny

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Re: Propylene Glycol vs. RV anti-freeze
« Reply #8 on: April 08, 2024, 09:07:19 am »
For what it is worth, I have been using RV glycol for years.

Just because you can doesn't mean you should.
Life begins at 60.....1.060, that is!

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The best, sharpest, funniest, weirdest and most knowledgable minds in home brewing contribute on the AHA forum. - Alewyfe

"The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts." - Bertrand Russell