What type of brake fluid should be used for brake master cylinder refill?

Using OEM-specific brake fluid for the brake master cylinder refill is essential because it adheres to the manufacturer’s specifications and requirements for the vehicle. OEM (Original Equipment Manufacturer) brake fluid is formulated to match the precise chemical and physical properties required by the braking system, including the appropriate boiling point, viscosity, and compatibility with the materials used in the braking system. This ensures optimal performance, safety, and longevity of the brakes.

Utilizing OEM-specific fluid helps prevent issues like brake fading, reduced braking efficiency, and potential damage to brake components. Many vehicles have specific requirements for brake fluid types, such as DOT 3, DOT 4, or DOT 5, which correspond to different formulations and performance characteristics. Therefore, following the manufacturer's guidelines is crucial for maintaining proper brake function.

In contrast, using generic or recycled brake fluid could lead to performance deficiencies or damage the braking system, as these options may not meet the specific requirements set by the manufacturer. Universal fluids, although convenient, may not always be compatible with particular materials in the braking systems and could compromise system integrity.