How to use DOT 4 Oil Liquid Moisture Water Detection Tool?

How to use DOT 4 Oil Liquid Moisture Water Detection Tool?

Step 1 – Press the button to power on; the button is at the top of the brake fluid tester



Step 2 – the battery led will turn green. It means battery ok.



Step 3 – Remove the cap and dip the test probes into the brake fluid



Green: None

Green/Yellow: Less than 1%

Green /Yellow/Yellow: Approx. 2%

Green/Yellow/Yellow/Red: Approx. 3%

—> The brake fluid should be CHANGED

Green/Yellow/Yellow/Red/Red: Approx. 4%

—> The brake fluid MUST be CHANGED urgently, extreme dangerously.

Note:

The brake fluid tested in the new fluid vs. fluid in water



Step 4 – After testing, screw the lid of the brake fluid reservoir back tightly

Step 5 – The tester will automatically power off after 12 seconds of inactivity.