What does brake fluid do?

Brake fluid compartment diagram

Brake fluid is a type of hydraulic fluid that is used in the brake system of a vehicle. It is used to transfer the force applied to the brake pedal by the driver to the brake calipers, which then apply pressure to the brake pads, causing the vehicle to slow down or stop.

Brake fluid is a very important component of the brake system and plays a crucial role in ensuring the vehicle’s braking performance. It acts as a lubricant and a coolant, reducing the friction and heat generated by the braking system. It also helps to protect the brake system components from corrosion and rust.

Brake fluid is designed to withstand high temperatures and pressure and is formulated to maintain its viscosity and lubrication properties over time. It is typically made from a mixture of glycol ethers and polyalkylene glycols.

The brake system is a closed system, and brake fluid is kept in a brake master cylinder reservoir, which is located near the engine. The fluid is then distributed to the brake calipers through a system of brake lines and hoses.

It’s important to regularly check the brake fluid level and to have it replaced every two years or so, or as recommended by the vehicle’s manufacturer. If the brake fluid becomes dirty or contaminated, it can cause a number of problems such as poor braking performance, reduced effectiveness of the braking system or even complete failure.

Can you drive with a brake fluid leak?

Driving without brake fluid is not recommended. If your brakes run dry, they will lose effectiveness, increasing your car’s stopping distance or not applying the brakes at all compromising you and your families safety. If your vehicle is leaking brake fluid, it should be repaired as soon as possible.


Causes of leaking brake fluid:

Cracked brake reservoir – The brake reservoir is what holds the brake fluid when it is not in use. Due to constant exposure to high temperatures, the reservoir can crack over time, resulting in brake fluid leaking. A leaking brake reservoir will create a puddle of brake fluid under the front of your vehicle.

Damaged brake line(s) – Your car has several brake lines located underneath the vehicle. The brake lines transfer the brake fluid from the reservoir to the rest of your braking system. These brake lines can become punctured, resulting in a leak of brake fluid.

Damaged brake caliper bleeder valve – Your brake calipers have valves attached to them which are generally used to bleed the vehicle of brake fluid when a replacement is due. If one of these valves becomes damaged, brake fluid may leak from around your wheels.

Leaking Brake Caliper or Wheel Cylinders – if the seals fail inside brake caliper or brake wheel cylinder then brake fluid can leak out


Symptoms of brake fluid leaking:

  • Puddles of clear fluid around your vehicle.
  • Low brake fluid in the brake reservoir.
  • Decreased brake effectiveness.

Brake fluid leak servicing in Hamilton

Do you need to fix a brake fluid leak in your vehicle? If so, we are happy to help.

At Grimmer Motors, our mechanics can quickly diagnose the cause of a brake fluid leak. We can replace brake reservoirs, calipers and any other components that are causing the leak. After fixing the issue, we will top up your brake fluid to a healthy level.

For reliable, fast, and quality brake repairs in Hamilton, contact Grimmer Motors today!


Book Now