HG Auto Car Brake Fluid Liquid Tester Vehicle 5 LED Pen Water Moisture Tester Indicator Oil Test Pen Tool
[Product Information]
Quick and easy way to test for moisture content in the brake fluid,results appear in seconds.
LED light indicators show percentage of water in the brake fluid.
Insert the tester into reservoir for a second , then the results will be indicated correctly by LEDs.
After testing, remember to screw the lid of the brake fluid reservoir back on tightly.
Turn on the brake fluid tester by pressing the button. A green light should light up. If the light does not come on, it may be time to change a battery.