Prestone AF-1420-6PK Antifreeze/Coolant Tester, (Pack of 6)

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.

True to form

The media could not be loaded. 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.

Buena herramientas de medición

Súper bueno !

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

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.