Contents
The Best Brake Fluid Tester Pen of 2023 – Reviewed and Top Rated
2,110 Reviews Scanned
- 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)
- 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.
- 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 system sensor 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 level sensor 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
- Large Display for Easy Reading: TESMEN TBF-300 Brake Fluid Tester features an enlarged screen and a data retention function, ensuring clear and convenient reading and recording of measurements
- Corrosion-resistant and Clean: TESMEN TBF-300 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
- Enhanced Functionality: TESMEN TBF-300 is equipped with an flashlight illumination to ensure that your tests are not affected by ambient light. This feature enables accurate testing even in low light or dark conditions, increasing the convenience and versatility of the tester while providing a more comprehensive inspection experience
- Precise Measurement: TESMEN TBF-300 Brake Fluid Tester supports DOT3, DOT4, and DOT5.1 brake fluid types, providing accurate readings within the 0%-4% range that is perfect tool for both service professionals and DIY enthusiasts
- What will you get: TESMEN TBF-300 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
- 【Core Function】: This brake fluid liquid tester pen is mainly used for checking the health of your car's brake fluid, providing you with more accurate test results. What's more, it can remind you to change the brake fluid when necessary, which can effectively avoid traffic accidents.
- 【Premium Material】: Our brake fluid test pen is made of high quality degree brass metal. It has good oil resistance, which is not easy to be corroded. Therefore, it can be used for a long time. The case is frosted with a good anti-slip design, so it is not easy to fall off when you use it.
- 【Checking Function】: The water content will be indicated by the number of LED's on the test pen. A red light indicates that the brake fluid needs to be changed, a green light indicates that the brake fluid is in good condition, and a yellow light indicates that the brake fluid is in fair condition.
- 【Application Scope】: It is suitable for testing the moisture content in DOT-3, DOT-4 and DOT-5.1 brake fluid. It is compatible with AAA batteries, but please note that batteries are not included in the package. Please follow the direction of the arrow on the test pen to open the battery cover.
- 【Operating Methods】: First, unscrew the brake fluid reservoir and then pull off the brake fluid tester cap. Second, press the button for power on, green LED will light up. Third, insert the tester into reservoir for one second, then the test result will be correctly indicated by LED. Finally, repress the button for power off.
Last update on 2025-07-17 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API
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FAQ:
Q: Which is the best brake fluid tester pen?
A: ITEQ Brake Fluid Tester Pen The ITEQ Brake fluid tester pen is high quality and fast fluid tester that has 5 LED indicators that are calibrated for cars using DOT3 and DOT4 fluids. To use it, you only need to turn it on by pressing the power button on top.
Q: What can a DOT3 brake fluid test do?
A: It can be used to test the water content in both DOT3 and DOT4 brake fluids. It was developed for use in professional automotive repair shops as well as servicing of vehicles. It has 5 LEDs that work to show the corresponding percentage of water in the brake fluid. It is also operated a 1.5V AAA battery.
Q: How can I tell if my brake fluid is bad?
A: The OTC 4598 brake fluid tester helps one detect bad brake fluid before it destroys the brake system components such as the expensive brake calipers. It determines the quality of DOT3 fluid and also measures moisture content from 0-4%. It shuts off automatically after 12 seconds if not in use. The tester is easy to use and interpret.
Q: What are the different colors of brake fluid?
A: Green color shows no water, yellow/yellow 1% of water, red 3%, and red/red 4% water content. A red color tells you that the brake fluid needs to be changed. After each use, its test probe should be washed with tap water. The ITEQ tester is calibrated only for DOT4 and DOT3 fluids but not for DOT5.