The Best brake fluid moisture tester of 2022 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best brake fluid moisture tester of 2022. Check our ranking below.

2,487 (random num) Reviews Scanned

SaleRank No. #1

ITEQ Brake Fluid Liquid Tester Pen with 5 LED Indicators, Calibrated For DOT3 DOT4 Brake Fluid

Test the car brake fluid quality quickly to check whether it’s qualified, which can remind you to change the brake fluid when necessary to avoid traffic accident
The LED indicators will show percentage of water in the brake fluid with 3 colors green yellow and red
Calibrated for cars using DOT4 and DOT3 brake fluids (But DOT3 is almost replaced by DOT4 because DOT4 has better performance)
Only takes seconds to know the results,very easy to use
CE and RoHS approved. Protective cap included.Takes 1 x AAA/1.5V battery (not included)

Rank No. #2

Brake Fluid Liquid Tester Pen,1PC DOT 3 DOT 4 DOT 5.1 Brake Fluid Liquid Tester Pen, Car Diagnostic Testing Tool with 5 LED Indicators, Hydraulic Fluid Liquid Oil Moisture Analyzer

High quality: This brake fluid tester is made of nickel-plated metal probe, which is resistant to oil and oxidation and not easy to corrode. The shell is black matte plastic, better anti-slip and good body texture. The change of conductivity can be used to determine the change of moisture in the brake fluid.
Safe driving: This brake fluid tester comes with 5 LED indicators to show the percentage of moisture in the brake fluid. This product can quickly detect the health of the car's brake fluid, provide you with more accurate test results, and remind you to replace the brake fluid when necessary to avoid traffic accidents.
Convenient and quick: This brake fluid tester is easy to use, press the button, insert the test pen, the indicator is accurate to 1%, and you can receive the result in seconds. To save electricity, the test pen will automatically turn off the power after 20 seconds each use to save power.
Scope of application: This brake fluid tester is suitable for testing the moisture content in DOT-3, DOT-4, DOT-5.1 brake fluid. It is also very convenient for personal use and this product is widely used in personal workshops, repair shops and dealer workshops.
Easy to carry: No cable connector design, small size, light weight, easy to carry and use. If you encounter any problem when using this product, please contact us and we will try our best to solve it for you.

SaleRank No. #3

KAIWEETS Brake Fluid Tester Pen with Corrosion Resistance Probe, High-Precision Brake Fluid Moisture Tester with Data Hold Function, Buzzer Alarm, 3 Colors Backlight, Calibrated for DOT3, DOT4, DOT5.1

Durable and Corrosion-Resistant : Featuring a corrosion-resistant probe, this brake fluid tester is designed for long-lasting performance. The durable construction ensures that the tool remains effective over time, even with frequent use, making it a reliable addition to your maintenance toolkit
Fast and Accurate Measurements : This brake fluid tester ensures quick and precise readings with an accuracy of ± 0.3%, covering a range of 0% - 4%. Whether you're checking DOT3, DOT4, or DOT5.1 fluids, this device offers reliable results, helping you easily maintain optimal brake performance
Convenient Features : The brake fluid tester includes a data hold function, allowing you to capture and review readings easily. It also features a three-color backlight and buzzer alarm function, which will sound an alarm to remind you to change the brake fluid immediately when the humidity level exceeds the safety limit of 3%, providing additional convenience and safety
Convenient Power and Operation : With its compact design, this brake fluid tester is easy to carry and store. It operates on 2x1.5V AAA batteries and functions well within a temperature range of 0-40°C. Its user-friendly design and quick measurement capabilities make it an essential tool for both professional mechanics and DIY enthusiasts
Customer Service : KAIWEETS Provides a 30-day free return and a 3-year warranty for each product. Lifetime technical support, if you have any questions, please feel free to contact us. Enjoy faster and more efficient measurements with this brake fluid tester. Allowing you to promptly address any issues and ensure your vehicle’s braking system is always in top condition

SaleRank No. #4

BSBMIEQM Brake Fluid Liquid Tester, Auto Brake Diagnostic Testing Tool, Oil Moisture Analyzer with 5 LED Indicators, Auto Brake Diagnostic Checker Tool for DOT3 DOT4 Brake Fluid，Father'Day Gift

PROTECTS YOU & YOUR CAR : Check the health status of DOT3, DOT4 car brake fluid, Brake Fluid Tester Pen can be used as a digital brake fluid tester suitable for determining brake fluid quality. It will be safe for your driving1
EATY TO USE : Press the button , Insert the tester into reservoir for one second then the tester result will be correctly indicated by LEDs.Repress the button for power off.
5 LEDS : 5 LED display lights the percentage of moisture content in the brake fluid, as the test results are more accurate
USEFULL : Supports DOT3 DOT4 DOT5 brake fluid .
EASY TO CARRY : Small size ,you can take it in pocket , take 1 AAA 1.5V battery. automatic shutdown after about 15 seconds of inactivity

Rank No. #5

Brake Fluid Tester, High Precision Car Brake Fluid Detector, Hydraulic Fluid/Liquid/Oil Moisture Analyzer with LCD Screen Audible Alarm DOT3 DOT4 DOT5.1 Tester,Automotive Replacement Level Sensors

[Scope of Application] --- Automotive Brake Fluid Detector is common fit for most vehicle. Check the health status of DOT-3, DOT-4, DOT-5.1 brake fluid and also most synthetic brake fluids. It's extremly convenient for personal use and broadly applied in individual workshops, repair factories and dealer workshops.
[Precision test and universal probe] --- Highly sensitive and precise probe, can quickly and accurately detect DOT-3, DOT-4, DOT-5.1 brake fluid and has received the result in seconds. The gooseneck probe provides flexibility in detection, making the detection process more elastic and efficient. Probe top with flash light, you can observe the colour of the brake fluid if needed.
[Easy Instant Read and Alarm] --- High sensitive probe + high resolution screen + audible alarm, instant display result, large display with backlight, easy and clear reading in sun or night. NEVER LIMITED BY THE ENVIRONMENTS. As soon as brake fluid sounds too much water alarm, it will remind you that you need to change the brake fluid.
[Premium quality and ergonomic design] --- body with good texture, compact size, perfect hand feeling. Gooseneck surface oils and oxidation resistant, not easily corrosive. Simple control panel, easy to use. Probe top with flash light, you can observe the colour of the brake fluid if needed.
[W-ORRY-F-REE SERVICE] --- The package doesn't include battery, please buy batteries in your local market. And We offer 1 year W-arranty. If you cannot confirm its compatibility, please feel f-ree to consult us. support@kingbolen.com. Automotive Replacement Brake Fluid Level Sensors.

Rank No. #6

TESMEN TBF-200 Brake Fluid Tester with 8.5-Inch Corrosion Resistance Gooseneck Probe, High-Precision Brake Fluid Tester Pen with Data Hold, 3 Colors Backlight Alarm for DOT3, DOT4, DOT5.1-Green

Corrosion-resistant and Clean: TESMEN TBF-200 brake fluid tester features a corrosion-resistant metal probe paired with an 8.5-inch adjustable gooseneck. This design ensures flexible operation while preventing device corrosion and maintaining cleanliness, ultimately extending the tester's lifespan
Efficient Measurement and Quick Readout: TESMEN TBF-200 is equipped with a digital display and a tri-color backlight alarm system. With a measurement range of 0%-4%, it allows you to quickly draw conclusions based on the clearly displayed values
Compact and Portable for Easy Use: Weighing only 0.15lb and featuring a convenient back clip, the TESMEN TBF-200 is designed for easy portability. Its user-friendly design makes it an essential tool for ensuring your safety and peace of mind
Versatile and Feature-Rich: TESMEN TBF-200 Brake Fluid Tester is a comprehensive inspection tool, compatible with three types of brake fluids: DOT3, DOT4, and DOT5.1. Additionally, it features a data hold function, making it easy to record measurements during testing
What will you get: TESMEN TBF-200 Brake Fluid Tester comes with 2*1.5V AAA batteries, a user manual. Additionally, it comes with a custom storage pouch that helps protect the metal probes from wear and tear while also preventing loss

Rank No. #7

Brake Fluid Tester Automotive Digital Brake Fluid Detector Moisture Detector for DOT3 DOT4 DOT5.1, Car Brake Fluid Boiling Point Meter with 2.8" Display Audible Alarm High Precision Probe (T10)

【Wide Compatibility】This 12V Brake Fluid Tester is compatible with DOT-3, DOT-4, DOT-5.1, and most synthetic brake fluids, a good tool to monitor brake oil condition by detecting the water content in the brake fluid, and helps you determine whether the brake fluid needs to be replaced. NOTE: Country of Origin: China.
【Normal mode and expert mode】The expert mode is convenient for professional mechanics to select the appropriate brake fluid model for accurate testing. The brake fluid tester can test DOT-3, DOT-4 and DOT-5.1 brake fluids and offers specific test options for brands such as MOTUL, ATE, FERODO, MOBIL, BREMBO, TRW, BOSCH, CASTROL, TOTAL, VALEO, FUCHS, etc. NOTE: Please check the type of brake fluid before purchasing.
【Moisture Content Test】Indicates [ OK ] when the water content is between 0%-2%, [ ! ] when the water content is between 2%-3%, and [ X ] when it is higher than 3%.
【2.8' HD Display with Backlight】The MRCARTOOL Brake Fluid Moisture Meter has a 2.8-inch LCD display with backlight, which provides users with a clearer display regardless of strong light or dark night, making your work more efficient and effortless.
【High-sensitivity probe】Equipped with a high-sensitivity sensor and a 260mm long foldable hose that can be rotated 180 degrees. The outer layer of the hose is made of 304 stainless steel, which is characterised by its oil resistance, oxidation resistance and corrosion resistance. The overall construction is smooth and compact.

SaleRank No. #8

Phoenix Systems 8006-B Double-Ended Brake Fluid + Coolant Test Strips (15 foil wrapped test strips), 1 Pack

15 Double-Ended test strips used to test both coolant and Brake fluid
Gives you the peace of mind that your Brake fluid is good and is safely performing its proper function
Identifies potential Brake fluid and coolant related problems before they occur -thereby ensuring your safety and fewer breakdowns
Simply remove the test strip from the foil wrapper, Dip it into your Brake fluid then coolant/antifreeze, and 60 to 90 seconds later you will know the condition of your fluids. (Scientific proof)
May save you from paying for an un-needed Brake fluid or coolant change

Rank No. #9

Brake Fluid Tester Pen, Automotive Brake Fluid Moisture Tester, Vehicle Brake Diagnostic Testing Tool, Hydraulic Fluid Liquid Tester Pen Oil Moisture Tester Analyzer Meter for DOT3 DOT4 DOT5.1

【3 Oil Type Detection Brake Fluid Tester】This brake fluid tester can be used to detect brake oil DOT3, DOT4, DOT5.1. DOT3 is the most common type of brake fluid used by daily drivers and it is also the default brake oil type when the brake fluid tester power on; DOT4 has a higher boiling point and has found its place in racing vehicles and police cars. DOT5 mainly used in special vehicles such asracing cars, but rarely used in passenger cars.
【Sound & Light Dual Alarm】When the brake fluid tester detects the value is between 0~2%, the backlight turns green, which means the brake oil can still be used. When the value is tested between 2~3%, the backlight is yellow, and the buzzer buzzes slowly, please change the brake oil. When the detected value is above 3%，the backlight turns red, and the buzzer buzzes quickly, please change the brake oil immediately. Tips: please wipe the probe clean, otherwise it will affect the results.
【High Quality & High Sensitive】This brake system diagnostic testing tool has a built-in high-quality probe, which is high sensitivity and fast response. The water content is 0%-4% representing no water and the amount of water content in turn, so that car owners can quickly understand whether the water content of the brake fluid is qualified. It is made of ABS material, which is moisture-proof and impact-resistant. Automatically shut down if there is no operation for 5 minutes.
【Easy to Use】This brake fluid tester is easy to use. 1. After install the batteries, gently remove the cap, hold on the power key for more than 1second. After the buzzer beeps, the screen lights on, and then choose the current oil type you want to test. 2. Insert the test probe into the brake fluid and immerse it in the liquid surface at most 2-5mm (please wipe the probe clean before or after using, otherwise it will affect the results). 3. Check the results through the display.
【Convenient Pocket Clip Design】Lightweight and compact, this brake fluid tester conveniently clips to your shirt pocket to carry with you. It fits nicely and ergonomically in your hand while working. Has an easy-to-understand interface, customers can operate the device with one hand. Out of the box you can rest assured of the Brake Fluid Tester and just enjoy 3-Year Warranty provided by Intendvision. Anything please feel free to contact us and we will try our best to help.

Rank No. #10

ZKTOOL New Upgraded Version Brake Fluid Tester Pen, Test DOT3 DOT4 DOT5.1 ENV6 ENV4 Brake fluids,Brake Fluid Moisture Analyzer with 5 LED Indicators,Brake Fluid Liquid Tester Pen

Function: The new pen type brake fluid moisture tester can widely test the percentage of moisture in DOT3 DOT4 DOT5.1 ENV6 ENV4 brake fluid; the results appear within a few seconds, fast and simple. Compared with similar products, it has a faster, more accurate reading capability and a wider range. Tap the top to turn on, and the green light is inserted into the water to use, simple and fast.
LED lights: 5 LED lights indicate the percentage of water in the brake fluid in three colors of green, yellow, and red. From low to high, they are green (0%), green-yellow (<1%), green-yellow-yellow (1 %-2%), green yellow yellow red (2%-4%), green yellow yellow red red (>4%). Easily grasp the percentage of water in the brake fluid, and consider whether to replace the brake fluid.
Convenience: The brake fluid tester tool is simple and convenient. It only takes a few seconds to check the quality of car brake fluid. It is easy to operate for many new car owners. At the same time, it is a must-have vehicle tool because of its small size and easy portability. And it will automatically shut down if you don't use it within 12 seconds, saving your battery. (Requires 1 x AAA/1.5V battery, not included)
Quality: The new Brake Fluid Liquid Tester Pen is a perfect tool that we updated after many studies of similar products on the market. It reads more accurately during the test. At the same time, its shell material is made of high-quality nylon, compared to ABS materials. The product is more corrosion resistant and has a longer service life.
Operation: Long press the top button to switch the type of brake fluid, the initial default is DOT3, and each time the LED from low to high turns on three times, one brake fluid is switched. If you want to use one of the brake fluids, when the LED light is in the brake fluid type gear, please release the top button when it flashes twice, and insert the bottom sensor plug into the brake fluid (brake fluid test pen 2/3 ), and you will understand percentage of water in your vehicle’s brake fluid

Last update on 2025-03-25 / Affiliate links / Images from Amazon Product Advertising API

How Do You Buy The Best brake fluid moisture tester?

Do you get stressed out thinking about shopping for a great brake fluid moisture tester? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching brake fluid moisture tester, which is why we have assembled a comprehensive list of the greatest brake fluid moisture tester available in the current market. We’ve also come up with a list of questions that you probably have yourself.

We’ve done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for brake fluid moisture tester that you consider buying. Your questions might include the following:

Is it worth buying an brake fluid moisture tester?
What benefits are there with buying an brake fluid moisture tester?
What factors deserve consideration when shopping for an effective brake fluid moisture tester?
Why is it crucial to invest in any brake fluid moisture tester, much less the best one?
Which brake fluid moisture tester are good in the current market?
Where can you find information like this about brake fluid moisture tester?

We’re convinced that you likely have far more questions than just these regarding brake fluid moisture tester, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for brake fluid moisture tester, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible brake fluid moisture tester. Make sure that you are only using trustworthy and credible websites and sources.

We provide an brake fluid moisture tester buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available brake fluid moisture tester currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

Brand Value: Every brand of brake fluid moisture tester has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
Features: What bells and whistles matter for an brake fluid moisture tester?
Specifications: How powerful they are can be measured.
Product Value: This simply is how much bang for the buck you get from your brake fluid moisture tester.
Customer Ratings: Number ratings grade brake fluid moisture tester objectively.
Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their brake fluid moisture tester.
Product Quality: You don’t always get what you pay for with an brake fluid moisture tester, sometimes less, and sometimes more.
Product Reliability: How sturdy and durable an brake fluid moisture tester is should be an indication of how long it will work out for you.

We always remember that maintaining brake fluid moisture tester information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding brake fluid moisture tester is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly! We’re here for you all the time. Contact us here. Or You can read more about us to see our vision.

FAQ:

Q: How do you test brake fluid?

A: To check your brake fluid, do the following: Clean the top of the reservoir carefully. Open the top of your brake fluid reservoir. Look to see where the fluid level lies; make sure that the brake fluid level is within half an inch or so of the cap. Check the color of your brake fluid.

Q: Why is test brake fluid?

A: The cheap electronic brake fluid testers measure moisture content in the fluid because the brake fluid absorbs moisture from the air. Enough moisture in the fluid can cause the brakes to feel spongy, they won’t work as well, and can boil the fluid quicker during heavier use.

Q: Why does brake fluid need to be replaced?

A: If you have replaced the pads/shoes and the calipers or wheel cylinders suddenly began leaking, that’s a signal not only that it’s time to replace the leaky parts but also to replace the brake fluid. Brake fluid is hydrophilic, meaning that it’s formulated to absorb moisture.

Q: What is the composition of brake fluid?

A: Brake fluid composition. Brake fluids usually contain up to 5% of additives. Corrosion inhibitors are added to protect the brake system metals from corrosion and antioxidants are needed to reduce the oxidative decomposition of glycol ethers polyglycols and to retard the formation of acidic decomposition products and resins. These two inhibitors’…