Practical Function: This car brake fluid tester has practical functions. The high-precision probe measures brake oil parameters with an error of less than ± 0.3%. The three HTN screens provide accurate readings, and the green silicone buttons are intuitive to operate. 1-minute automatic sleep mode to save power. The side buckle design is compact and portable, powered by a No. 7 battery, and can measure the water content of brake oil at any time, helping to protect the safety of the brake system.

Easy Installation: Before testing, unscrew the brake fluid reservoir cap, remove the probe protective cover, press the power button, and hold for 3 seconds to set the brake fluid type (if you need to change it, hold for 3 seconds until it flashes, then press briefly to switch and wait 3 seconds); then select the corresponding DOT 3/4/5.1 rating, insert the metal probe parallel into the fluid, ensuring contact with the fluid surface, and judge performance based on the display.

Intelligent Display: After detection, if the water content of the brake oil is less than 1.5%, the screen will display green, indicating that the brake oil is free of water. When the moisture content is less than 3%, the screen displays yellow, indicating that the brake oil performance is good, but it needs to be checked regularly. When the moisture content is in the range of 3% -4%, the screen turns red and accompanied by a beep sound, reminding the owner to replace the brake fluid.

High Quality Material: Our car brake fluid tester is made of high-quality PP and metal materials. The metal probe has good conductivity and wear resistance, enabling it to accurately penetrate the surface tension of brake fluid and quickly and stably obtain moisture content data, ensuring precise and reliable test results. The PP housing has good impact resistance, providing the instrument with lightweight yet robust protection, ensuring its durability.

Wide Application: Our car brake fluid tester measures 6.1 x 1.18 x 1 inches. This tester is compatible with DOT 3/DOT 4/DOT 5.1 brake fluid standards, covering most brake fluid types available on the market. Regardless of the type of brake fluid used in your vehicle, as long as it falls within the above range, the tester can be inserted to quickly obtain moisture content data.