Which type of brake fluid should not be mixed with others?

Silicone brake fluid should not be mixed with other types of brake fluids, particularly those that are glycol-based, such as DOT 3 and DOT 4. Silicone brake fluid is chemically different and is formulated for specific applications, such as in vehicles that are stored in wet environments or those that may experience brake fluid contamination. Mixing it with other brake fluid types can lead to reduced braking performance and system corrosion, as each fluid has different properties, boiling points, and chemical compositions. Therefore, sticking to one type of brake fluid is critical to maintaining the integrity and safety of the braking system.