Brake Fluid Tester Car Diagnostic Tool 5 LEDs Brake Fluid Testing Tools

Features1. To check the quality of brake fluid quality. 2. 5 LEDs to indicate percentage of water in the brake fluid. 3. Automatically power off. 4. Operated by a LR03 AAA 1.5V battery. 5. Press the button for power on, green LED will light up. 6. Insert the tester into reservoir for a second , then the results will be indicated correctly by LEDs.Indications:1. Green: Battery OK, i.e.: No Water Contained in the Brake Fluid. 2. Yellow: Less than 1% of Water Content in Brake Fluid. 3. Yellow/Yellow: Approximately 2% of Water Content in Brake Fluid. 4. Yellow/Yellow/Red: Approximately 3% of Water Content in Brake Fluid. The Brake Fluid Should be Changed. 5. Yellow/Yellow/Red/Red: at least 4% of Water Content in Brake Fluid. The Brake Fluid Must be Changed Urgently, Extreme Danger.