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BRAKE FLUID TESTING TYPE: The dot 3 brake fluid tester pen can also be used for testing the fluids of DOT4, DOT5.1, ENV6 & ENV4. Compatible with the

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How to Use: 1. Turn on the brake fluid tester by pressing the button on top. A green light should light up. If the light does not come on, it may be time to change a battery 2. Unscrew the lid for the brake fluid reservoir, and take off the cap for the brake fluid tester 3. Dip the test probes into the brake fluid and the LED lights will indicate the percentage of water in the brake fluid 4. After testing, remember to screw the lid of the brake fluid reservoir back on tightly 5.

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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

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High Quality Performance: Brake fluid detection pen is based on the change in conductivity to determine the moisture change brake fluid. The Brake

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