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Old 09-11-2021, 10:18 AM   #1
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OAT coolant freeze test

I would like to test the freeze point of the Final Charge coolant. Is there anything I can use other than refractometer.I see some inexpensive refractometers on Ebay but the description states it is for ethylene glycol. I have a few of the testers with a bulb and an arrow. Thanks
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Old 09-11-2021, 10:28 AM   #2
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Put some in a cup in your freezer?
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Old 09-11-2021, 11:47 AM   #3
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I got one on amazon for around 15 bucks that measures 5 different fluids.
propylene and ethylene are in the center with three other gauges for other fluids.
windshield washer and def and battery acid
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Old 09-12-2021, 07:27 AM   #4
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Bpu. If one travels in the great white North you need at least minus 35 protection
A freezer might be minus 10.
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Old 09-12-2021, 07:32 AM   #5
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Jean-Luc. Thanks
I did read the amazon descriptions
My coolant is OAT not ethylene or propolyne. I will have to grab one of my jugs and see what chemical is used
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Old 09-12-2021, 08:05 AM   #6
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For some reason the link to the Cummins coolant testing pdf won't work, but I put a screenshot below. Coolant science has changed.
But a refractometer is the way to check all modern coolants, including OAT and NOAT.... google it, if needed, lol.
You can also use a test strip from Fleetguard.

The bulb float tester will not work on them.

Attachment 342802
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Old 09-18-2021, 08:35 PM   #7
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OAT coolant does have a drawback, decreased corrosion resistance: https://knowhow.napaonline.com/what-is-oat-coolant/
I have remained with using traditional anti-freeze for a couple of reasons. One is the high cost of a refractomenter, A high quality one will cost North of $300.

Mack here's my posting attempt for the test strips: https://www.cumminsfiltration.com/eme/analysis
BTW, you left out HOAT...
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Old 09-20-2021, 10:06 PM   #8
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I have a question Ray,

What brand of conventional coolant are you using, what SCA are you adding and how much per gallon of 50/50 mixed coolant?

Thanks,
Dennis
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Old 09-21-2021, 06:50 AM   #9
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Quote:
Originally Posted by suzygirl2017 View Post
I have a question Ray,

What brand of conventional coolant are you using, what SCA are you adding and how much per gallon of 50/50 mixed coolant?

Thanks,
Dennis
I don't remember brand of low silicate diesel engine coolant I used, the coolant filter comes with SCA inside and is automatically dispensed very slowly. I have test strips I use once a year.
My MH did not come with OAT coolant in 2000,
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Old 09-21-2021, 02:28 PM   #10
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Final charge "OAT" is ethylene glycol based.
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Old 09-21-2021, 07:21 PM   #11
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Quote:
Originally Posted by 36PFT View Post
Final charge "OAT" is ethylene glycol based.
But cannot be accurately tested with a traditional tester.
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Old 09-22-2021, 02:58 PM   #12
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I bought one of those priced refractometers from Amazon
About $30.00 Easy to use. Final charge and the other OAT coolants are approved by all major diesel engine mfr. The anti corrosive power is " slightly" less. I have never heard of anyone having a problem. I spoke with an engineer at Old World. They make Final Charge and maybe 20 other brands like Prak and Wal-Mart
They told me that in an rv it would probably outlive the engine. Many OTR trucks use OAT right from the factory.
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Old 09-22-2021, 03:01 PM   #13
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"Million Mile Mavericks - Old World Industries" https://www.owi.com/commercial/resou...mile-mavericks
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Old 09-25-2021, 04:33 PM   #14
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Be testing mine for a couple of thousand miles heading south in a few weeks. I'm sure it won't freeze ����
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