E-Z Red S102 Anti-Freeze Hydrometer

Works great

Purchased this right in time before the coldest temperatures in decades would hit town (-30°F). I checked both my vehicles and while one had coolant good to -50°F, my truck only would be good to -18°F. These numbers are an approximate since you have to level the device in order to get good readings, but considering the given -30°F it was clear to me that the truck wouldn't survive this cold. I left the truck running during the day when outside, and only turned it off only when back in the heated garage.If I could take half a star off I would do it; the reason is that it is somewhat difficult to level it. I wish one side would have a straight edge so it could be held against a wall for more consistent readings, but other than this it is a great quick and easy to use tool to get the coolant mix in the right ballpark.

I almost buy a NEW one each 1-2 years. Just the quality of the suction bulb is what makes this a step above most others.

Definitely easy to use and the draw tube is of sufficient length to reach coolant.

I've done auto repair most of my life. And, I've used a wide variety of anti-freeze hydrometers to check the level of protection. In almost every case, I've typically used the Auto Parts Store units, or good old Wal-Mart... In every case, almost without exception, I've gotten INACCURATE READINGS. The E-Z Red S102 Anti-Freeze Hydrometer really works perfectly. Its inexpensive, and effective. What more can anyone ask for.Side Note: Make sure that the White Disk inside the Hydrometer moves smoothly up and down without sticking, or rubbing against the clear plastic case. It must move freely up and down to give an accurate reading. If you happen to get one that "sticks", Either Return it for a replacement, or contact EZRED.Com for a replacement. Their warranty is terrific.Rayko

This model is so professional and indeed easy to read for my senior citizen eyes even without glasses checking under the hood. Everyone should have one to be sure you have that 50-50 mixture of coolant in the engine for the cold days of winter and the hot days of summer. Easy to use and to read. An inexpensive investment in your vehicle's engine to keep it running properly and avoid costly engine repairs.

I service stand by generators. I have used others coolant testers in the past. This one has given me the best results. Also made in America!

Great product for testing antifreeze.The numbers and letters are embossed in the plastic for true readings.Great product !

After reading many reviews, I bought this one and was not disappointed. It's well made with quality materials and has been very helpful for our household. Would definitely recommend it.

Very good tool to have in order to mix your pure antifreeze... good quality... but the most important thing it that's the job I will recommend

As described. However, it seems to measure the coolant in both of my vehicles as good to -60*F ... and that just doesn't sound right to me as it should be between -40 and -45*F. Time will tell. I was going to buy the E-Z Red battery tester but I think I'll hold off for now.

Used this one when I was a apprentice...in 1978 the new ones just don't work for me. Nice to see it was assembled in canada as well :) will only lend out the other one ... :) Oh the bulb is black like the old one You can easily read this one. The rubber where it joins the plastic is bent as it is stuffed in the box just heat it up with a heat gun and massage it straight. and you got a nice antifreeze tester. Oh I am a mechanic of 40 plus years and a real fuss butt. ( I bought 2 )

Well made, works as it should