Brake Fluid: What Are Their Top Features

Brake Fluid: What Are Their Top Features


Brake fluid is a vital component in any vehicle’s braking system. It is a hydraulic fluid that transfers force from the brake pedal to the brake pads or shoes, pressing against the rotor or drum to slow down or stop the vehicle. In this article, we will discuss the top features of brake fluid that make it an essential component of any car.¬†View it now to get info about brake fluid manufacturer.

Boiling point

The boiling point of brake fluid is one of its essential features. It is the temperature at which the liquid starts to vaporize and form air bubbles, which can lead to brake failure. A high boiling point ensures the brake fluid can withstand high temperatures without vaporizing, providing consistent and reliable braking performance.


Viscosity is another crucial feature of brake fluid. It is the resistance of the liquid to flow and is measured in centistokes (cSt). The correct viscosity ensures that the brake fluid can flow easily through the brake system and transfer force from the pedal to the brakes. The wrong viscosity can lead to a spongy or unresponsive brake pedal.

Corrosion resistance

Brake fluid is exposed to metal components of the brake system, which can cause corrosion over time. Therefore, the brake fluid must have excellent corrosion resistance to prevent damage to the brake system and ensure its longevity.


Brake fluid must be compatible with the materials used in the brake system, such as rubber seals and hoses. If the brake fluid is not consistent, it can cause damage to these components and lead to leaks and brake failure.

Water absorption

Brake fluid is hygroscopic, which absorbs water from the atmosphere over time. Water in the brake fluid can cause corrosion, reduce the boiling point, and lead to brake failure. Therefore, the brake fluid must have a low water absorption rate to ensure its effectiveness and safety.

DOT ratings

Brake fluid is rated by the Department of Transportation (DOT) based on its boiling point and viscosity. DOT 3, DOT 4, and DOT 5.1 are the most common ratings for brake fluid. These ratings indicate the fluid’s ability to withstand high temperatures and its compatibility with different materials in the brake system.

Brake fluid is essential to any vehicle’s braking system, and its top features ensure reliable and safe braking performance. The boiling point, viscosity, corrosion resistance, compatibility, water absorption, and DOT rating are some of the essential features of brake fluid that every driver should consider when selecting a brake fluid for their vehicle.