NF Brake Fluid Tester with Sound Light Double Alarm Function, Calibrated for DOT3 DOT4 DOT-5.1 Brake Fluid Tester Pen

Perfect, works well and seems accurate.

Great value for money

Brilliant… works as it should. Very happy and fits well. Price was very good and product is very well covered all round

I’ve used the tester to check the brake fluid in my car it gave me a reading of 2.3 % which suggests I should change the fluid, seeing the car is 5 years old is about right. I then tested it on fresh brake fluid and it gave me a much lower reading, on the results of both tests I will have the brake fluid changed at my next service. Brake fluid is one of those things we tend to forget about, but it looses its effectiveness with age, and it’s not part of my annual service, you have ask to have it done, and pay for it.

Great for testing brake fluid for water in brake fluid

Holds the charge well. Good power and doesn’t nip, easy to use. Good value.

Works well and simple to use... This may save you a good deal of money in the long run.

It's ideal tool to explain whether you need to spend your money on a brake fluid change, coat £15 and saved me a £90 fluid change. the only reason you change brake fluid oils is either particle contamination, which cannot happen in most cars under 7 years old, or water moisture absorption which builds up over time. so this device tells you the specific percentage moisture level with enough accuracy to be meaningful. Great way to make decisions and save money with risking any safety issues

Die Kontrollleuchte funktioniert. Die gemessene Bremsflüssigkeit ist fast 2 Jahre alt.

Fa il suo lavoro

I got this because the dealership told me my brake fluid needed to be flushed and wanted to charge me $250 for the job. I bought this tool and it showed that my fluid is good, so no need to flush now. I was getting ripped off and this tool saved me $250. I highly recommend this tool.

Je viens de faire un essai dans mon bol d'alimentation des freins (et embrayage ) . Aucun soucis (1.3 % ) d'humidité . en DOT 4 . Le stylo autorise trois types de liquides de frein ;appuyer sur la touche bleue ,après avoir allumer le stylo (touche rouge ) Suivant le pourcentage d'humidité ça allume en rouge, en jaune, ou en vert ; En rouge aller vite changer le liquide et purger ; en jaune -attention ,à surveiller ; en vert -pas de problème particulier ! Très bien fait , fonctionne vraiment bien . J'ai fais des essais sur un sopalin humidifié et le stylo a marqué plus de 4% en rouge !! excellant produit .

Muy buen dispositivo para saber el porcentaje de agua en el líquido de frenos y no ir a cambiarlo cuando no es necesario.