6512ABrake Fluid Tester for DOT4


The tester can be used as a digital brake fluid tester suitable for determining brake fluid quality. Quality is tested and indicated on 5 LEDs in terms of "percent of water in the brake fluid". Develop for professional use in automotive repair shops and in servicing.


  • Suitable for DOT4.
  • Battery 1.5V AAA.
  • With CE and UKCA Approval.


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:
  1. Press the button for power on, green LED will light up.Insert the tester into reservoir for one second then the test result will be correctly indicated by LEDs.
  2. The tester will automatically power off after 12 seconds of inactivity.
  • Green: Battery OK, no water contained in the brake fluid. 
  • Green/Yellow: Less than 1% of water content in brake fluid. 
  • Green/Yellow/Yellow: Approximately 2% of water content in brake fluid. 
  • Green/Yellow/Yellow/Red: Approximately 3% of water content in brake fluid.  The brake fluid should be changed. 
  • Green/Yellow/Yellow/Red/Red: At least 4% of water content in brake fluid.  The brake fluid must be changed urgently, extreme danger.