Brake Fluid Liquid Tester,Hydraulic Fluid Liquid Oil Moisture Analyzer with 5 Led Indicators,DOT 3 DOT 4 DOT 5.1 Brake Fluid Liquid Tester Pen for Check Engine Car Accessories

Brake fluid tester works perfect this is my second one the other one my brother wanted it it works good. He told me I had too much water on my brake fluid so I had to change my brake fluid and my brakes worked a lot better thanks for this fluid tester thanks.

It’s easy to use and so far I’d say it works good. Battery life seems to be just fine. But it is cheaply made. I’d probably but it again if breaks

It definetly works but if you even think there's a possibility of moisture in your fluid just change it. But it definetly worked on some old fluid i already knew needed to be changed. Only issue i have with it is after testing it i dropped it from about waist high and that was that. No more fluid tester. I supppose if i were more patient i could have at least tried to put it back together but I'm not and i didn't. Not the sturdiest thing thats for sure.

Great product and price. Using on my old cars.

The second time i used it the plastic surrounding the probes fell apart and became unusable. There was no warning about fluid touching the plastic. I can only assume that's the case. Regardless that's not practical way to use tester.

It was immediate I mean been nice of a battery to come with it but it seems to work really well and which helps me a lot because the dealerships tend to say that you need a brake fluid service because your brake fluid's worn out and this is saying a brake fluid still good and being old school I also looked at the brake fluid and checked didn't it still seems to be good so it's saved me around $200 to $300 on a brake fluid service 🐕‍🦺

Have not used it as of now I believe it or do the job

So I was debating doing a brake fluid flush becausey fluid is nasty looking and lots of travel in brakes. Bought this because I figured it was cheap and why not try it out. HOLY CRUD! So my brake fluid light this up like Christmas! All the lights light up indicating the fluid needs to be replaced immediately. Was still a little skeptical because my brake fluid wasn't too terribly old so I decided to check a bottle of DOT 3 brake fluid I had lying around that I opened about 3 1/2 years ago (I was thinking that the device was not working and it just said it was bad to get me to replace fluid) BUT NO! When I tested that old bottle that I kept the lid on tight for those years never opening again it came at as O.K. to use! So I went back and checked car againand it light right back up, so that confirms it in my mind that this thing WORKS! Love it! I even ran around the house testing random things to check the water content...........yes. it works. For $8......BUY IT!!!!!!!!