Brake fluid tester, pen-shaped automotive brake fluid tester, universal brake fluid tester DOT3, DOT4, DOT5.1 with high-precision digital LED display.

[Brake Fluid Tester – For Safe Driving] The braking system is the most important safety component of a car, and the quality of the brake fluid directly affects its performance. Brake fluid attracts water, which lowers its boiling point and makes it susceptible to vapor lock at high temperatures, potentially leading to brake system failure. This brake fluid tester is compatible with all common standards, including DOT3, DOT4, and DOT5.1. It quickly and accurately measures the water content of the brake fluid, allowing you to determine if a change is needed and ensure your safety behind the wheel. [Compatible with DOT3, DOT4, and DOT5.1 – One Device for All Vehicles] DOT3: Suitable for most small cars; DOT4: Suitable for mid-size and full-size cars, as well as sports cars; DOT5.1: Suitable for high-performance vehicles and race cars. One device for all vehicles: No modifications required, automatic detection and measurement. Compatible vehicle types: Sedans, SUVs, motorcycles, trucks, and electric vehicles.