What are the consequences of using incompatible brake fluids?

Using incompatible brake fluids can lead to brake system failure or damage due to the chemical interactions that occur when different fluid types are mixed. Brake fluids are specifically formulated with certain additives that provide necessary properties like boiling point, lubricity, and moisture absorption. When incompatible fluids are combined, these essential qualities can degrade, leading to a significant reduction in the brake system's effectiveness.

For instance, if a glycol-based fluid is mixed with a silicone-based fluid, it can cause the brake fluid to become less effective at transferring pressure, leading to a spongy brake feel or complete brake failure. Additionally, the resulting mixture may promote corrosion of brake system components and cause seal deterioration, which can result in leaks and further system failure. Therefore, ensuring the use of the correct and compatible brake fluid is crucial for maintaining the integrity and safety of the braking system.