Automotive Brake Fluid Brake Oil Testing Pen Vehicle Brake Fluid Tester Oil Quality Test Display Testing Tools With Liquid LED

Description:
5 Measurement: 5 LED indicators for more accurate testing
High Precision Probe: Made of high-precision materials, the test is accurate
High-Quality Material: With black surface treatment. the product is rust-proof durable and wear-resistant
Anti Slip Design: The product is frosted, comfortable to touch feel, and not easy to slide down
Simple Operation: Press the switch to turn on the power supply, and the green LED indicates that the battery is normal, if the green light is not on, it means the battery needs to be replaced

Directions For Use:
5 LEDs indicate the percentage of water in brake fluid:
0% LED: Water content in brake fluid.
1% LED: water content, H2O ≤ 1%, brake fluid above standard.
2% LED: water content, H2O ≤ 2%, still usable
3% LED: water content, H2O ≤ 3%, brake fluid recommended to be replaced.
4% LED: water content, H2O≥ 4%, brake fluid must be replaced.