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Old 01-20-2019, 07:58 AM   #1
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Replacing the Alde fluid

Has anyone replaced the Alde fluid (Glycol) after the recommended two year period? Specifically the 2018 Classic RQB model. We are getting close to our build date in June and was considering changing it out myself. Not sure how much glycol would be needed and if you need some accessories (pump) to make this task easier. We have an appointment at JC in May maybe I should just let them do it, but I would miss all the fun.
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Old 01-20-2019, 11:53 AM   #2
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After you buy all the equipment, can I borrow it?

https://youtu.be/XwrFfntcQoc
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Old 01-20-2019, 12:03 PM   #3
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Here is another link that may be of some help.

https://youtu.be/ADhn3cdR954
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Old 01-20-2019, 03:09 PM   #4
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Well Turk123, this looks like an opportunity for my first YouTube video since there seems to be nothing out there. Of course my video will be far more entertaining I'm sure and may have to come with a warning prior to viewing.
I'm usually up for a challenge but we will see if time permits. I can make you up a kit, reasonably priced of course.
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Old 01-20-2019, 03:34 PM   #5
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It wasn’t mentioned, but where did you get the fluid and equipment for the change, and what was the cost.

I was talking to my local AS dealer the other day about the change. They have a set price to do it, and buy the fluid in a 5 gallon bucket. Not sure where to get the bulk fluid or cost, but may be worth exploring.
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Old 01-20-2019, 05:08 PM   #6
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trepine, I have not changed this fluid yet. Actually I am not convinced it is G12++ which needs changing after 2 years. The color of mine looks blue/violet which coincides with G13, which only needs changing every 5 years. More research is needed on my end before I go forward.
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Old 01-21-2019, 12:20 AM   #7
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The 2018 Fall edition of Airstream Life had an article on this that basically recommended testing the pH level of the glycol with a test kit you can obtain from any swimming pool type store (and probably at Walmart). It stated if the pH level was higher than 6 there is no need to replace the fluid. Once it reaches 6 it recommends replacement by an Airstream dealer. It also provided the Airstream part number for the replacement fluid: 360371-100.
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Old 01-21-2019, 01:26 AM   #8
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That’s interesting an seems very reasonable. I would expect someone full timing would need to replace much more frequently than someone using it 5 weekends a year. Hope that’s the case, we are something i’m between, but most of our use is summer not gal/winter.
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Old 01-21-2019, 07:04 AM   #9
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mdaley21, That's a good reason to get the magazine which I decided not to, now I need to find a copy. Thanks for that bit of information, I will research that and ask Spencer when I call Alde about the type of fluid I might have.
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Old 12-27-2019, 12:28 PM   #10
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Does anyone know how much fluid is needed to flush it?
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Old 12-27-2019, 02:23 PM   #11
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I have a suspicion that this thread is going to be popular in 2020 as all the 17s and 18s are 2+ years old now... I have zero knowledge on this but will be following for updates!
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Old 01-05-2020, 11:39 AM   #12
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This thread addresses changing the glycol after two years as recommended. Can you let me know which glycol product you used during the first two-year period to top off the expansion tank? The Alde premium product recommended by Alde is not available on Amazon. Also, we noticed the original fluid in expansion tank appears to be blue and most of the fluids online and at Camping World are pink. AS dealer is closed today, but we will also check with them tomorrow.
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Old 01-05-2020, 11:53 AM   #13
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From the Alde App FAQs

How often do I need to replace the glycol in my Alde Heating System?

It depends on the quality of glycol already in your heating system. Glycol is a consumable item and has to be replaced before it stops providing protection (lubrication and rustproofing). A good quality glycol (type Alde G13) will only have to be replaced every five years, while glycol of a poorer quality should be replaced every two years. So in the long run, it's worth using a good quality glycol.
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Old 01-05-2020, 12:00 PM   #14
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From the Alde App -

What type of glycol should be used in Alde heating System?

Alde recommends a glycol of quality G12++ or G13. Our range includes a ready-mixed Premium Long Life Glycol suitable for Alde heating systems.

If you're unable to get hold of the above, you should use a 50:50 mix of ethylene glycol and water. Ethylene glycol (AKA monoethylene glycol, MEG and ethanediol) is an anti-freeze that's also used in car engines and is available from petrol stations, garages and car accessory stores in concentrated form or ready-mixed.

Do not mix anti-freeze containing silicates with anti-freeze containing non-silicate-treated OAT. When diluting concentrated glycol, make sure the water is clean and fresh, and ideally use distilled water.
Anti-freeze containing phosphates should only be mixed with distilled water.
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Old 01-05-2020, 12:04 PM   #15
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Also from Alde App FAQs-

How much glycol should be in the expansion tank?

When the liquid is cold, the level in a system of normal size should be about 1 cm above MIN.

The bigger the heating system, the more the liquid expands and so the level should be lower when the system is cold.
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Old 01-05-2020, 01:39 PM   #16
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Looking at other websites of trailers that use this system they stated the pH level should be between 9.5 and 10.5. Not sure what to believe now.
Quote:
Originally Posted by mdaley21 View Post
The 2018 Fall edition of Airstream Life had an article on this that basically recommended testing the pH level of the glycol with a test kit you can obtain from any swimming pool type store (and probably at Walmart). It stated if the pH level was higher than 6 there is no need to replace the fluid. Once it reaches 6 it recommends replacement by an Airstream dealer. It also provided the Airstream part number for the replacement fluid: 360371-100.
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Old 01-05-2020, 04:48 PM   #17
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Fall 2018 Airstream Life

The cost for the fall18 Airstream Magazine is $8.

https://store.airstreamlife.com/coll...ucts/fall-2018
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Old 01-05-2020, 04:55 PM   #18
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The forum evidently doesn’t allow URLs to be posted or doesn’t allow them to be posted until approved by moderator.

The fall 18 back issue can be purchased on the Airstream Life website for individuals who prefer not to subscribe on an ongoing basis.
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Old 01-05-2020, 05:31 PM   #19
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According to Alde app it is G13 which will provide the longest glycol fluid life...up to 5 years.
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Old 01-05-2020, 09:38 PM   #20
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G13 is not used in the US. It is an ethylene glycol and poisonous. US Alde units use a propylene glycol. Alde app is not country specific.
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