Brake Fluid

Brake fluid is a type of specially formulated hydraulic liquid used for brake applications in automobiles. Since hydraulic brake fluid cannot be compressed, brake fluid under pressure transfer force to various parts of the braking system.

Characteristics of Brake Fluid

• Should have high boiling point, but it should not boil under high temperatures
• Should have low freezing point
• Should be able to lubricate the brake system
• Should not be corrosive
• Should be chemically stable for a long period of time
• Should not be compressed readily
• Should be compatible, mixable with other glycol-based products
• Should not decompose

Types of Brake Fluid
Generally, there are three main types of brake fluids, standardized under the DOT (Department of Transportation) standard:

• DOT3: glycol-based and absorb water, so, its boiling point can decrease
• DOT4: glycol-based and absorb water, so, its boiling point can decrease
• DOT5: silicone-based and does not absorb water, its boiling point remains relatively stable

Maintenance of Brake Fluid

• To increase the performance of the brake system, brake fluid should be changed on a regular basis.
• At every oil change, the level of the hydraulic brake fluid should be checked.
• Regular cleaning of the brake fluid and brake system is necessary.
• When contaminated by other oils, water or dust, the brake fluid should be changed.
• Brake fluid eat paints, so they should not be spilled over any automobile part.
• They should be kept away from children.