Prestone AF-1420 Antifreeze / Coolant Tester, Multi

Works great, and for a good price relative to others. Takes just a little practice to get it full by squeezing the bulb--no big deal. Highly recommend.

This thing is so handy and inexpensive to purchase everybody should have one. Not only for mechanics, everyone should have one of this unless you never touch under the hood of your car. Makes it simple to check the concentration of coolant once you have mixed your own or done a coolant change and are replacing your coolant. Super easy to use and is cheap made but has lasted so far with multiple uses. Its easy to read and tell the concentration of the coolant mix in your system.

Easy to read and easy to use. With clear markings. It works as expected because i also tested it with normal tap water. One star less beacuse it could have a litlle longer hose. Good value for money as it can save you a lot of money if a shop tells you to change your coolant and you want to verify if it is actually needed or not. Nice looking little tool.

I doubt this is particularly precise but I’d argue high precision not particularly required for testing anti freeze. Is tremendously easy to use and worth having even if you have a shop do the antifreeze replacement work because I found in my case my shop left me tremendously under protected after some radiator work. Rinse it out after use or it won’t last long term.

It does what it is supposed to do. There is not too much else to say. It is pretty simple to use.

Low cost option to see if your antifreeze is up to Par. Easy to read. Sturdy.

Compared it to my (very) older one like this one and they both agreed with each other. Cheap money for a good product that could last a Very long time with proper care. Just follow the simple instructions indicated on the tool.

Works good. Like it much better than the ones with floating balls in it.

I bought this to check the coolant in my marine engine, where leaks could have diluted the coolant and negated its protective effect. Easy to use: pump a little coolant using the attached hand-pump, and read off the level of protection based on the density of the coolant. Reliable, simple, no electronics needed, and reusable. Really a neat tool to have in colder climates, and when you don't know if your coolant was ever diluted with water.

Not..

Suitable price, effective device, and reliable.

Tested on radiator successfully, it’s works perfectly

Does what it's supposed to do... an easy to use tester..that anyone can use..