Contents

The Best Brake Fluid Tester Pen of 2023 – Reviewed and Top Rated

2,203 Reviews Scanned

Rank 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)

SaleRank No. #2

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

High Quality Performance: The brake fluid detector uses nickel plated metal probe, oil and oxidation resistant, not easy to corrosion. The case is matte black plastic for better skid resistance and good body texture. Metrics are accurate to 1% and results are received within seconds. Help you understand the brake fluid more clearly.
Safe Driving: This product can quickly check the health condition of your car brake fluid and remind you to change the brake fluid when necessary to avoid traffic accidents, so that you are more comfortable and safer.
Easy Operation: Brake fluid detector is easy to use, and small size easy to carry. Press the button, insert the test pen, it only takes a few seconds to know the result through the LED, in order to save power, this test pen has automatic shutdown function. It will automatically turn off the power after 20 seconds each time to save power.
Wide Application Range: can be used in most cars. It is suitable for detecting the moisture content in DOT-3, DOT-4, DOT-5.1 brake fluid. It is very convenient for personal use and widely used in individual workshops, repair shops and dealer workshops.
Service Guarantee: The brake fluid detector requires 1 LR03 AAA 1.5V battery. Our package does not include batteries, please buy batteries at local market. We offer a one-year warranty. If you cannot confirm its compatibility, or have any questions, please feel free to contact us.

Rank No. #3

Aicevoos NF Brake Fluid Tester Pen Brake Fluid Test Strips, Calibrated for DOT3 DOT4 DOT-5.1 Brake Fluid

WIDE RANGE OF APPLICATIONS: The automotive brake fluid tester is a universal device for most vehicles. It can check the condition of DOT-3, DOT-4, DOT-5.1 brake fluids as well as most synthetic brake fluids. It is extremely easy for personal use and is widely used for private workshops, repair shops and car dealerships.
EASY TO USE: The test procedure is fast and efficient and has a simple control panel. The backlight lights green at 0%-2% data (brake fluid is ready to use). At 2%-3%, the backlight turns yellow and the buzzer sounds slowly (brake fluid needs to be changed). The backlight is red and the buzzer sounds quickly when the data is greater than 3% (brake fluid needs to be changed immediately).
EASY READING: high-sensitivity probe + audible alarm, instant display of results, large screen with three-color backlight, easy to read the measurement results whether day or night.
FAST DETECTION: the detection process is fast and efficient, the control panel is simple and easy to use. Can quickly determine whether the brake fluid needs to be replaced after the background light reminder.
EASY TO CARRY: the case is well structured, compact and fits well in your hand. You can take it with you when traveling without taking up too much space.

SaleRank No. #4

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.

Rank No. #5

‎KINGBOLEN Brake Fluid Tester with 5 LED Indicators,DOT 3 DOT 4 DOT 5.1 Brake Fluid Liquid Tester Pen for Check Engine Automotive Accessories,Auto Brake Diagnostic Testing Tool Oil Moisture Analyzer

【Useful Brake Fluid Tester】KINGBOLEN Brake Fluid Tester can be used on most cars; It is easy-to-use and suitable for testing the water percentage in the DOT-3, DOT-4, DOT-5.1 brake fluid. Check the health status of your car brake fluid quickly, and remind you to change the brake fluid in time to make you more comfortable and safe. It's extremly convenient for personal use and broadly applied in individual workshops, repair factories and dealer workshops.
【Accurate to 1% High Precision Sensor】KINGBOLEN Brake Fluid Test Strips has nickel plated metal probe, which is oil-proof and oxidation-proof, not easily corrosive.Metrics is accurate to 1%, quickly and accurately detect DOT3, DOT4, DOT5.1 brake fluid pen and has received the result in seconds.To help you get a clearer picture of brake fluid.
【5 LED Indicators Quick Calibration】Brake fluid detection pen is based on the change in conductivity to determine the moisture change brake fluid. It shows clearly the extent of moisture contained by the light-emitting diode.The LED indicators will show percentage of water in the brake fluid with 3 colors--Green,Yellow and Red.Red indicates the brake fluid needs immediate replacement, Green represents good condition, Yellow indicates the state is acceptable but soon replaced.
【Support DOT3, DOT4, DOT5.1 brake fluid】Quick and easy method to accurately gauge the moisture content of all types of brake fluid. Press the button , Insert the tester into reservoir ,Only takes seconds to know the results by LEDs,very easy to use.In order to save power,this test pen has the automatic shutdown function. It will automatically turn off the power to save power 20 seconds after starting up every time.
【WORRY-FREE SERVICE】Brake Fluid Pen Tester outer shell is Matte black plastic , Better skid resistance, Body with good texture, compact size, perfect hand Feeling. It take 1 LR03 AAA 1.5V battery.By the way,The package doesn't include battery, please buy batteries in your local market. And We offer one year warranty. If you cannot confirm its compatibility, please feel free to consult us.

SaleRank No. #6

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

Rank No. #7

Taxutor Brake Fluid Tester Pen Hydraulic Fluid/Liquid/Oil Moisture Analyzer with 5 LED Indicators, Auto Brake Diagnostic Testing Tool for DOT3 DOT4 Brake Fluid

Check the health status of DOT3, DOT4 car brake fluid, dangerous if you do not change brake fluid timely
5 LED display lights the percentage of moisture content in the brake fluid, as the test results are more accurate
Easy to use simply power up, dip probes into brake fluid and read results,Only takes seconds to know the results.High quality electrical conductivity mental design, super strong ABS shell, small compact size, easy to carry in pocket
Operated by a LR03 AAA 1.5V battery (not included), automatic shutdown after about 15 seconds of inactivity
PLEASE NOTE: Please use clean water to clean after the test, otherwise the brake fluid may corrode the test pen

Rank No. #8

eOUTIL Brake Fluid Tester Pen, Hydraulic Fluid Liquid Oil Moisture Analyzer with 5 LED Indicators, Auto Brake Diagnostic Testing Tool for DOT3 DOT4 Brake Fluid

SAFE&USEFUL---The unit is Mini Pen Liquid Moisture Water Tester Tool. Check the health status of DOT3, DOT4, DOT5 car brake fluid, it will be safer for your driving.
5 LED INDICATORS---5 LED to indicate percentage of water in the brake fluid with three colors green yellow and red. Even in the dark does not affect reading, make reading data easier.
EASY TO USE---The brake fluid tester is easy to use. Check the quality of brake fluid in car only takes seconds. Make it easier to operate for beginner. It's a must-have car tool for your car owners.
PORTABLE&DURABLE---Brake fluid tester pen is small compact size, easy to carry. Super strong ABS shell, has long service life.
AUTO TURN OFF---In order to save power, this test pen has the automatic shutdown function, it will automatically turn off the power 15 seconds after starting every time.

Rank No. #9

Brake Fluid Tester, Hydraulic Fluid Liquid Oil Moisture Analyzer with 5 LED Indicators Oil Quality Check Pen Auto Brake Diagnostic Testing Tool for DOT3 / DOT4 / DOT5

Check the car brake oil quality
5 LED lights display the percentage of moisture content in brake fluid
1 LR03 AAA batteries (not included)
Brake fluid detection pen is based on the change in conductivity to determine the moisture change brake fluid. It shows clearly the extent of moisture contained by the light-emitting diode, high moisture content will lead to lower boiling point, affect braking performance.
Red indicates the brake fluid needs immediate replacement, green represents good condition, yellow indicates the state is acceptable but soon replaced.

Rank No. #10

Brake Fluid Tester Pen ETCHESHI Brake Fluid Tester for DOT4 with 5 LED Light Indicators

Brake Fluid Tester Pen ETCHESH Brake Fluid Tester For DOT4 With 5 LED light indicators ETCHESH Brake Fluid Tester Pen with 5 LED Indicators for DOT4 Brake Fluid Tester can be used as a digital tester which is suitable for determining brake fluid quality. It tests and indicates on five LEDs in terms of percent of water in the brake fluid.
Top 4 Advantages of Brake Fluid Tester Pen: Quick and easy way to test for moisture content in the brake fluid; results appear in seconds! LED light indicators show percentage of water in the brake fluid Calibrated for cars using DOT 4 brake fluid only (found in most cars produced since 2006) Only takes seconds to know the results
To Check Fluid Quality: Press the button for power on, green LED will light up. Insert the tester into reservoir for a second , then the results will be indicated correctly by LEDs. Auto power off.
Indications: Green: Battery OK, i.e.: No Water Contained in the Brake Fluid Yellow: Less than 1% of Water Content in Brake Fluid Yellow/Yellow: Approximately 2% of Water Content in Brake Fluid Yellow/Yellow/Red: Approximately 3% of Water Content in Brake Fluid; The Brake Fluid Should be Changed Yellow/Yellow/Red/Red: at least 4% of Water Content in Brake Fluid; The Brake Fluid Must be Changed Urge

Rank No. #11

SHAPERME Car Brake Fluid Liquid Oil Tester Pen with 5 LED Indicator Testing Automotive Tool Display Q8E7

Simple Design: 5 LED indicators show percentage of water in brake fluid. brake fluid tester pen is compact and portable.
Wide Application: Suitable for DOT3, for DOT4, for DOT5car brake fluid. This brake fluid tester is developed for both professional and amateur, widely applied in individual, repair factories and dealer workshops.
Easy to Use: Press button , Insert tester into reservoir for one second then tester result will be correctly indicated by LED.
Satisfaction Guarantee: If you are not satisfied for any reason, please contact us for customer support. We will do everything we can to ensure your needs.
Main function: Check car brake oil quality

Rank No. #12

Brake Fluid Tester, Auto Brake Diagnostic Testing Tool, Hydraulic Fluid/Liquid/Oil Moisture Analyzer with 9 LED Indicators for DOT3/DOT4/DOT5.1 Brake Fluid(BF100)

【Support all kinds of Cars】KINGBOLEN Brake Fluid Tester can be used on all cars; It is easy-to-use and suitable for testing the water percentage in the brake fluid. Any problems please contact us to get prompt solutions. please contact us with Amazon or send mail to support@kingbolen. com .
【High Precision Sensor 】KINGBOLEN Brake Fluid Tester has nickel plated metal probe, which is oil-proof and oxidation-proof, with good condition and high precision.
【Support DOT3, DOT4, DOT5.1】Quick and easy method to accurately gauge the moisture content of all types of brake fluid.
【5 STATUS EXPLANATION 】With multiple LED indicators, the measurement results are more accurate and more convenient to use!
【WORRY-FREE SERVICE】The package doesn't include battery, please buy batteries in your local market. And We offer one year warranty. If you cannot confirm its compatibility, please feel free to consult us. If you encounter problems during use Brake Fluid Tester , please contact us with Amazon or send mail to support@kingbolen. com . We will reply to you as soon as possible and solve the troubles, and give you a good shopping experience.

Rank No. #13

5 LED Indicators Brake Fluid Liquid Tester Pen Auto Tester Tool for DOT 3 DOT 4 DOT 5.1 Vehicle Diagnostic Testing Tool

FUNCTION: Quickly detect the quality of automotive brake fluid is qualified, Can quickly help you check the brake fluid, Timely replacement, To avoid danger.
HOW TO DISTINGUISH: It shows the degree of moisture through the light-emitting diode, high moisture will lead to reduced boiling point, Affect brake performance, Corrosion brake pump and pump lead to rust jam and so on. Red light means that the brake fluid needs to be replaced immediately, Green light means that it is in good condition, And yellow light means that it is in good condition, But it is about to be replaced.
SIMPLE OPERATION: This product can be used for automobile 4S shops and owners, And the product operation is simple, Accurate and fast! It takes only a few seconds to complete the inspection.
SIMPLE OPERATION: This product can be used for automobile 4S shops and owners, And the product operation is simple, Accurate and fast! It takes only a few seconds to complete the inspection.
WHAT YOU CAN GET: Brake fluid tester x 1

Rank No. #14

Powerbuilt Brake Fluid Tester, LED Light Quality Indicators for Braking Systems, Test DOT 4 Water Content, Pocket Sized 647626

Brake Fluid Tester
This Device Is for checking the quality of the Brake Fluid In the Reservoir and In the lines
The Led Indicators will Identify the percentage of water content In the Brake Fluid
Easy to use - simply power up, dip probes into brake fluid and read results
LED lights indicate brake fluid quality

Rank No. #15

X AUTOHAUX Brake Fluid Liquid Tester Pen Auto Brake Diagnostic Testing Tool with 5 LED Indicators for DOT3 DOT4 Brake Fluid

Protection: The brake fluid test pen is used to check the condition of DOT3 DOT4 automobile brake fluid, confirm the quality of brake fluid, and protect your driving safety.
5 LED lights: 5 display the percentage of moisture content in the brake fluid, the test result is more accurate. Allows you to understand the quality of brake fluid and replace it in time.
How to Use: Press the top button to turn on the brake fluid tester, dip the test probe into the brake fluid, the LED light will indicate the percentage of water in the brake fluid. Remember to tighten the brake fluid reservoir cap after the test.
Easy to Carry: The brake fluid test pen is small in size and takes up little space. Only one pocket is needed for storage. take 1 AAA 1.5V battery is required. It will automatically shut down after about 15 seconds of inactivity.
Package: 1 pcs brake fluid tester(Battery Not Included), Note: If the green light is no longer on after pressing the button, replace the battery.

Rank No. #16

Brake Fluid Tester,Digital Brake Fluid Tester Oil Quality Check Pen W/ 5 LED Lights for DOT3 / DOT4 / DOT5

Used to:Brake Fluid Tester is used to determine the according to conductivity change and check the car brake oil quality, it used to test for DOT3 / DOT4 / DOT5 fluid.
Used to:Brake Fluid Tester is used to determine the according to conductivity change and check the car brake oil quality, it used to test for DOT3 / DOT4 / DOT5 fluid.
Used to:Brake Fluid Tester is used to determine the according to conductivity change and check the car brake oil quality, it used to test for DOT3 / DOT4 / DOT5 fluid.
Used to:Brake Fluid Tester is used to determine the according to conductivity change and check the car brake oil quality, it used to test for DOT3 / DOT4 / DOT5 fluid.
Used to:Brake Fluid Tester is used to determine the according to conductivity change and check the car brake oil quality, it used to test for DOT3 / DOT4 / DOT5 fluid.

Rank No. #17

Brake Fluid Liquid Tester, Automotive Brake Fluid Content Detector, 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. #18

Ronben Brake Fluid Tester | Mini Pen Dot 4 Oil Liquid Moisture Water Detection Without Battery

According to the variation of electrical conductivity to determine the moisture content of the brake oil change.
High moisture will lead to the boiling point is reduced, affect the braking performance<
Green: Battery OK, i.e.: No Water Contained in the Brake Fluid
Calibrated for DOT 4 fluid only Compact, at only 6" Length
Power supply: 1.5V "AAA" x 1 (not included) ,5 LEDs indicating the water % in the brake fluid

Rank No. #19

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 (BF100)

Support DOT3, DOT4, DOT5.1: This brake fluid tester supports multiple types of brake fluid, it can be used to detect brake oil DOT3, DOT4, DOT5.1, DOT3 is the most common type of brake fluid used by daily drivers; DOT4 has a higher boiling point and has found its place in racing vehicles and police cars.
High Sensitivity Probe: This brake system diagnostic testing tool has a high-sensitivity probe, built-in high-quality sensor, high sensitivity, fast response, and easy to use. The probe is sturdy and durable, can be twisted and flexible.
Accurate Detection and Built-in Audible Alarm: This brake fluid tester can accurately detect the state of the brake fluid. When it detects that the moisture content of the brake fluid exceeds the standard, the alarm on the back of the device will sound to replace the brake fluid. It is easy to read and easy to use.
How to Use Brake Fluid Tester: First install press the power button deeply for 3 seconds to turn on the power of the device, and then select the current oil type. Insert the test probe into the brake fluid (wipe the probe clean, otherwise it will affect the results). Check the results through the LED display. Press and hold the power button for 2 seconds to turn on/off the LED flashlight. Tip: Please prepare the battery by yourself.
Multiple LED Indicators: The brake fluid tester contains various LED indicators, which will help you determine what state the brake fluid is in and whether it needs to be replaced immediately. Keeping the brake fluid good and clean can shorten the braking distance!

Rank No. #20

Brake Fluid Liquid Tester with 5 LED Indicators, Liquid Tester Pen for Check Engine Automotive Accessories, Brake Diagnostic Testing Tool Oil Moisture Analyzer for DOT 3 DOT 4 DOT5.1 Brake Fluid

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 driving.
EASY 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 LED INDICATORS: Brake fluid detection pen is based on the change in conductivity to determine the moisture change brake fluid. It shows clearly the extent of moisture contained by the light-emitting diode.The LED indicators will show percentage of water in the brake fluid with 3 colors--Green,Yellow and Red.Red indicates the brake fluid needs immediate replacement, Green represents good condition, Yellow indicates the state is acceptable but soon replaced.
USEFULL : Supports DOT3 DOT4 DOT5 brake fluid .
PACKAGE CONTENTS: 1 PIECE Brake Fluid Liquid Tester with 5 LED Indicators.

Last update on 2023-09-12 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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Is it worth buying an Brake Fluid Tester Pen?
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Brand Value: Every brand of Brake Fluid Tester Pen 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 Tester Pen?
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 Tester Pen.
Customer Ratings: Number ratings grade Brake Fluid Tester Pen objectively.
Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Brake Fluid Tester Pen.
Product Quality: You don’t always get what you pay for with an Brake Fluid Tester Pen, sometimes less, and sometimes more.
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We always remember that maintaining Brake Fluid Tester Pen information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

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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.