Universal Car Auto Tools Oil Accurate Quality Check Pen Brake Fluid Tester OZ

ITEM NAME:Universal Car Auto Tools Oil Accurate Quality Check Pen Brake Fluid Tester OZ 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.1PCS brake fluid tester. 1, the green LED lights = water content in the brake fluid H2O <1.5%, brake fluid qualified. 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.