Test Antifreeze Coolant Concentration With a Refractometer

Use a refractometer to check antifreeze coolant concentration. The correct strength antifreeze coolant is important, hydrometers are often not very accurate tool to check the ratios.

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[Know-How-Now]

There are hundreds of videos at Know How Now, subscribe so you can always find the channel…. It’s free. I always respect your time and do my best to keep the videos brief, but informative. Check out the channel with this link:

[heavymechanic]

This is a really GREAT demonstration of how to test antifreeze using the floating balls and the better tool. Some of the stuff on YT is total crap and you make it easy to understand. If you are inside a shop or its a little dark, the screen is black and you need light to make it work (just a tip).

[barryshea]

You just told me everything I needed to know that was NOT included in the user's manual. Which was just about everything. Thank you!

[johnsandquist]

Trying to get an accurate reading on Bobcat Propylene Glycol coolant. Never knew such a tool existed. Very informative. Great job ! Thank you.

[dsbennett]

I just bought a specific gravity type antifreeze gage. It said my car is good for -20 degrees F, wife's car did not indicate at all - the pointer just hung straight down. Daughter's car same thing. Took the cars to a mechanic friend who pulled out his Bausch & Laum refractometer and it said all the cars were good to -10 to -15 degrees. So thank you for this excellent video. Now I know what to do. And thanks for no background music! I can actually hear you speaking clearly, unlike so many other videos.

[jonwiersig]

Great video. I saw these for sale at Amazon but had no idea how to use one. I appreciate your efforts and great explanations. Good job!

[joshuamoore_]

Thanks for the video, it's decent info. Plus that price range on the refractometer helped.

[glennschaub]

Last time I used a refractometer was for making beer or whiskey !

[danijel]

I bought this for windscreen washer fluid. Why are there two scales on the windscreen fluid?

[petersachs]

I wanted to use this to check an EVs coolant loops to make sure the dealership charged the coolant properly. Sounds like the refractometer is not the right tool for the job?

[t]

Most modern cars will require a 50/50 mix so 50% of distilled water and adding 50% of the right oe coolant concentrate, so check the cars Oe coolant specs, plus if you live in a really hot place around the world, change and flush you coolant completely after every 2 years even through they say it will last 5 years IMHO, that way you know its good, but also by using a re factomter for checking glyco and inhibitor test strips is the best way to check how good is you radiator coolant in your car, the refractometer only test the glyco levels and not the inhibitors in the coolant, which test strips do both and are a lot cheaper, but the same meter checks other things as well, as you can see on the scale on the viewing lens. :) sedo

[joshuamoore_]

FYI it seems like the orange Mopar MS 9769 HOAT coolant and the regular flouscent yellow mixes with any type of coolant from Durex have the same 50/50 mix temperature range ratings of -34°f to 265° f !!!!

[losteden]

and how teste the aditives concentration? for corrosion etc?

[micthegreasemonkey]

Good vid is the refractometer actually reading coolant concentration?

[joshuamoore_]

Did get the refractometer online or at a auto parts store .

[omsingharjit]

What mean of green Type Ethylene Glycol coolant ?

[SatanIceCream]

you sound like you are from Philly or PA

[harrycalibra]

Nice thanks for the upload new sub and thumb clicked 😎👌