• Origin: CN(Origin)
  • Brand Name:: VDIAGTOOL
  • Shipping: Fast and Timely
  • Quality: Top Quality
  • Black tester battery:: AAA batteries/not include
  • Technical Support: Available and Timely
  • Item name: Brake Fluid Tester
  • Function: check the car brake oil quality
  • Package: Standard

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, check the car brake oil quality
2,5 LED lights display the percentage of moisture content in brake fluid
3, auto power off




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