@@theoverengineer I actually got one, similar to yours, but mine seems to be very inaccurate. I bought a new bottle of -36 'C coolant and measured it. The gadget showed something close to -22 'C. Maybe it's sensitive to the temperature of the liquid when measuring, but that's still too much of a difference. Well, what did I expect for 5 bucks :)
If you overfill it there is no need to let any liquid out. The pointer will point to the same place whether it is filled to the line, or past the line. Just don't underfill.
Thank you, theoverengineer. Do you read the approximate center of the pointer or the bottom or top edge? I was also concerned with well used coolant about pH readings? Should a litmus test be performed also, when operating with old coolant in the system, to avoid corrosion? Especially with differing metals such as aluminum alloy heads and high carbon steel head bolts and of course, head gaskets which are exposed to the coolant and heat cycling. Cheers! -Sandy
Several Google references say that the freezing point of water with maximum salt solubility is about -6 degrees F (-21.1 degrees C). It appears that your test on the salt water showed the needle at -45 degrees F. How could this be accurate?
There a good guide. Accurate no... i used the same type on my saltwater fishtank and ended up buying a refractometer. But as cars go. There good enough
Took me a while to find a great person to explain the readings. Thank you.
Hvala vam super ste ..🙏
Great explanation of how this instrument operates and thank you.
great explanation and demonstration!
great demo, thanks for showing this tester in action (about to get one) :)
Glad it was helpful!
@@theoverengineer I actually got one, similar to yours, but mine seems to be very inaccurate. I bought a new bottle of -36 'C coolant and measured it. The gadget showed something close to -22 'C. Maybe it's sensitive to the temperature of the liquid when measuring, but that's still too much of a difference. Well, what did I expect for 5 bucks :)
If you overfill it there is no need to let any liquid out. The pointer will point to the same place whether it is filled to the line, or past the line. Just don't underfill.
Thank you, theoverengineer. Do you read the approximate center of the pointer or the bottom or top edge? I was also concerned with well used coolant about pH readings? Should a litmus test be performed also, when operating with old coolant in the system, to avoid corrosion? Especially with differing metals such as aluminum alloy heads and high carbon steel head bolts and of course, head gaskets which are exposed to the coolant and heat cycling. Cheers! -Sandy
Thank you very much for this video.
fantastic. thank you
I don't understand how it works - it's just a float - how does it detect what the freezing point is without any regard for the chemical?
Density or the plastic. It does regard chemical composition of water and whatever coolant is in it or salt.
Several Google references say that the freezing point of water with maximum salt solubility is about -6 degrees F (-21.1 degrees C). It appears that your test on the salt water showed the needle at -45 degrees F. How could this be accurate?
Oversaturated solution was used.
Is this reusable?
Yes it is, for decades. The coolant though is good for 2 years only, then deteriorates.
Thank you
You're welcome
Does this thing works or is it junk, this is similar to hydrometer? And under what temp C/F from that thing do I need to flush coolant.
Depends on how cold your winters are. Only you know.
There a good guide. Accurate no... i used the same type on my saltwater fishtank and ended up buying a refractometer. But as cars go. There good enough
It IS a hydrometer.
Too long winded!
thx
Excellent explanation but needs good English
At what time in the video?
@@theoverengineer Your english is fine. Thanks for the video.
I’m listening to it at 1.5x speed and understand every word. Maybe you need to listen better