Brake Fluid Tester, Profession Automotive Motorcycle Brake Lubricant Moisture Analyzer Detector Intelligent, Auto Diagnostic Testing Tool for DOT 3 / DOT 4 / DOT 5.1 Brake Lube (Gray)

This instrument is very easy to use and performs as described. It saved me money as the service provider who does maintenance on my car said my brake fluid was contaminated with moisture and he was going to change it at a cost of $180. I used the tester to measure the moisture in the brake fluid and found it well within the safe zone and did not need to be replaced. That makes me conclude that my service provider may not be ethical. I think I'll take my business elsewhere.

Works great, I had to test with new and old brake fluid.

Reads as advertised and extends fluid changes based on humidity readings of fluid. Saving money and reducing frequency of brake bleeds in 3 vehicles. What's not to like?

I run a mechanic shop, I’ve tried this tester on every kind of brake fluid you could imagine & it shows the same results every time. Whether the car is brand new or sat in a driveway for 8 years untouched. There is absolutely zero accuracy. I want to return it but the company won’t let me. DO NOT WASTE YOUR MONEY

As a part time auto technician this tool helps cut out any guesswork when it comes to testing brake fluid. It’s easy to read display and switchable modes make it a convenient tool to have on hand when doing inspections. The flexible head makes checking nearly any brake fluid reservoir a breeze. Added bonus is it comes with batteries. I don’t think you can beat the price considering the options it comes with.

I now know if my cars brakes fluid needs to be changed.

Good quality and works great. Most tools like this are usually over hyped and flimsy, but this one is substantial and works as it is supposed to. Buy it.

Works great but you can't leave the batteries in it because they die before the next time you need it.

This tool is very good and accurate

Great piece of gear to add to your workshop. It does exactly what is advertised and checks water content in Brake fluid. Personally Tested Dot3 and Dot 5 with excellent visual and audible results. Highly recommended. And at a really great price.

Did not work , just drains batteries ...useless item .

How many people know when to change their brake fluid - this tells you in an instant

I bought this thinkin git would be better than the simple pen types. I was wrong. This is junk. On new fluid from a sealed container it said the moisture content was unacceptable and needed to be replaced. It errored on every car I tried it on. Honestly. I wish I had never bought this pile of rubbish. I would not recommend anyone buy this at all.I've only rated this one star as thats the lowest. I wish there was a negative scoring system.