Brake fluid is a crucial hydraulic fluid used in a vehicle’s braking system to transfer force from the brake pedal to the brake components at each wheel. When the driver presses the brake pedal, brake fluid transmits this pressure through the brake lines to activate the brake calipers or wheel cylinders, which then apply force to stop the vehicle. Brake fluid must withstand high temperatures and pressures without boiling or compressing. There are different types of brake fluids, such as DOT 3, DOT 4 and DOT 5, each with specific performance characteristics and compatibility requirements. Over time, brake fluid can absorb moisture from the air, reducing its effectiveness and increasing the risk of brake failure. Therefore, regular checks and periodic replacement of brake fluid are essential for maintaining braking performance and ensuring vehicle safety.