Solnoi Electronics Break Fluid Tester for DOT3/DOT4 Grade Car Oil Level Tester Car Brake Fluid Digital Tester Vehicle Tool Kit

Indicator Description: 1. 5 LEDs indicating the water % in the brake fluid: 2. 0% light indicates that the battery is OK, no replacement 3. 1% light indicates that moisture content of brake oil less than 1% , brake fluid has a good performance, and ease of use. 4. 2% light indicates that moisture content of brake oil less than 2%, brake fluid can be continued to use 5. 3% light indicates that moisture content of brake oil less than 3% , proposed to replace brake fluid. 6. 4% light indicates that moisture content of brake oil less than 4%, brake fluid should be replaced immediately. 7. Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understanding.