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MINI Brake Fluid Tester Pen Automotive Universal Detector DOT3/DOT4/DOT5 Testing 5 LED Brake Fluid Tester Car Diagnostic Tool

MINI Brake Fluid Tester Pen Automotive Universal Detector DOT3/DOT4/DOT5 Testing 5 LED Brake Fluid Tester Car Diagnostic Tool

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$8.99 USD (each)

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Our Price

$8.99 USD (each)

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Brand Name: JFIND

Origin: Mainland China

External Testing Certification: ce

Hardware Version: Latest version

Item Length: 8

Special Features: OBD2

Software Version: Newest version

Item Width: 5

Model Name: Brake Fluid Tester

Item Height: 2

Power: W

Item Type: Electrical Testers & Test Leads

Item Weight: 0.25

Voltage: 1.5v

Electronic: No

Material Type: plastic and material

Item Name: Brake Fluid Tester Pen

Oil type: DOT3/DOT4/DOT5

Choice: yes

MINI Brake Fluid Tester Pen Universal Detector For DOT3/DOT4/DOT5 Automotive Testing 5 LED Car Diagnostic indicator Pen

Brake Fluid Liquid Tester Auto 5 LED Car Vehicle Testing Tool

Many thanks for selecting this brake fluid tester.

The tester can be used as a digital brake fluid tester suitable for determining brake fluid quality. Developed for professional use in automotive repair shops and in servicing. Quality is tested and included on five LEDs in terms of "per cent of water in the brake fluid . "

Ready for Brake Fluid Test

Unscrew the brake fluid reservoir, and pull off the cap of the Brake fluid tester.Dip the test probes into the brake fluid up to the plastic rim of the device.

To check Fluid Quality

Press the button for power on, green LED will light up. Insert the tester into reservoir for one second then the tester result will be correctly indicated by LEDs.Repress the button for power off. The tester will automatically power off after about 15 seconds of inactivity.

Tester Specification:

1. To check the quality of brake fluid quality

2. 5 LEDs to indicate percentage of water in the brake fluid

3. Automatically power off

4. Operated by a LR03 AAA 1.5V battery (Not included)

Tester Instructions:

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.

1. the green LED lights = water content in the brake fluid H2O <1.5%, brake fluid qualified

2. the yellow LED lights = brake fluid water content H2O = 1.5% to 3%, can continue to use, test again six months later

3. the red LED lights = water content in the brake fluid H2O> 3%, can not continue to use the brake fluid needs to be replaced Red LED: change brake fluid

4.LED red flashing: battery replacement

5.LED yellow: low moisture content, check again in six months

6.LED green: brake fluid lines / cell row

Tester Features:

Five LED indicators show the test results more accurate.

Testing DOT 3, DOT4, DOT5 brake fluid

Press the switch to turn on the power, the green LED light that represents the battery properly, the green light does not shine on behalf To replace the battery

Automatic shutdown

Technical parameters:

Green: Battery OK, that is, brake fluid does not contain water

Green / yellow: brake oil in water content of less than 1%, better brake fluid performance, ease of use.

Green / yellow / yellow: brake oil in water content of about 2%, brake fluid can continue to use.

Green / yellow / yellow / red: brake oil in water content of about 3%, the proposed replacement of brake fluid.

Green / yellow / yellow / red / red: brake oil in water content of at least 4%, the brake fluid must be replaced immediately responsible for very dangerous.


1. Replace battery if the gree LED not light up any longer after you press power on button. Wash the test probe with tab water after use.

2.In case of skin contact with brake fluid, thoroughly wash the affected skin or clothing with water.

3.Do not expose brake fluid to the atmosphere for a long time as the fluid is highly hygroscopic!

Packaging List

1x brake fluid tester

1x PE bags packing

Please note: it no included battery. Please buy at your local store .Battery model is LR03 AAA

Shipping & Returns

  • Shipping Method & Time

Uncle Will 4x4 fulfillment center offers SAME STOCK on  all online sales channels and uses mainstream logistics providers in the United States for shipping, such as UPS, USPS, Fedex, or Amazon FBA Warehouse. You will get your package from Amazon fulfillment center.

Shipping Methods:UPS, USPS, Fedex, Amazon

Your order will be fulfilled in 24h on workday usually and it takes 3-14 workdays to arrive you if you are in US local mainland. If It's statutory holidays, the order will be holded.


  • Shipping Area

We just can ship to US Mainland.


  • Shipping Fee & Taxes

Free Standard Shipping, No Extra taxes charged.


  • Tracking Information

The tracking information will be updated to the website in 2-3 workdays usually.


  • Something Wrong in Transmitting

If you notice that something wrong about your package in transmitting(Such as missing, damaged .etc), please contact us.

If have any question and need help, please feel free to reach out of us!

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