Brake Fluid Tester Pen, Automotive Brake Fluid Content Detector, Vehicle Brake Diagnostic Testing Tool, Hydraulic Fluid Liquid Tester Pen Oil Moisture Tester Analyzer Meter for DOT3 DOT4 DOT5.1

Overview【3 Oil Type Detection Brake Fluid Tester】This brake fluid tester can be used to detect brake oil DOT3, DOT4, DOT5.1. DOT3 is the most common type of brake fluid used by daily drivers and it is also the default brake oil type when the brake fluid tester power on; DOT4 has a higher boiling point and has found its place in racing vehicles and police cars. DOT5 mainly used in special vehicles such asracing cars, but rarely used in passenger cars.

【Accurate and Reliable】Our tester features an original high-accuracy probe made of excellent materials. This ensures precise and reliable measurements, giving you confidence in the results and helping you make informed decisions about your brake fluid maintenance.

【Sound & Light Dual Alarm】When the brake fluid tester detects the value is between 0~2%, the backlight turns green, which means the brake oil can still be used. When the value is tested between 2~3%, the backlight is yellow, and the buzzer buzzes slowly, please change the brake oil. When the detected value is above 3%，the backlight turns red, and the buzzer buzzes quickly, please change the brake oil immediately. Tips: please wipe the probe clean, otherwise it will affect the results.

【Easy to Use】This brake fluid tester is easy to use. 1. After install the batteries, gently remove the cap, hold on the power key for more than 1second. After the buzzer beeps, the screen lights on, and then choose the current oil type you want to test. 2. Insert the test probe into the brake fluid and immerse it in the liquid surface at most 2-5mm (please wipe the probe clean before or after using, otherwise it will affect the results). 3. Check the results through the display.

【Quick Distinguish Capability】The tester allows for quick and easy determination of the water content in the brake fluid; It provides readings ranging from 0% to 4%, representing different levels of water content; This allows car owners to promptly know the condition of their brake fluid and determine if it meets the necessary specifications.