Trustworthy Advice:
How Brake Fluid Works


Brake fluid takes the pressure you apply to the brake pedal and transfers that pressure to the calipers, squeezing the pads on the rotors and making the car slow or stop. Heavy stops mean a lot of stress and heat, but brake fluid is very good about not compressing and not boiling. When properly maintained, it stays the same shape under heavy stress - making sure it squeezes the brakes just as hard as you press the pedal.

  • Why do I need to change brake fluid?

    Brake Fluid is Hygroscopic, which is a huge word that means it loves water. If water is around, brake fluid will absorb it. But the more water it absorbs, the less tough it gets. This is why brake fluid exists in a closed system in your car. Most brake fluid will absorb about 2% water over the course of a few years, and that creates a major decrease in the amount of heat and cold that fluid can withstand. This is why it’s important to change your brake fluid regularly.

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  • Why are brake lines important?

    The brake lines allow your brake system to respond to your braking in one closed system. When you press down on the pedal, the fluid transfers pressure to the brake calipers or drums, and passes the pads or shoes against the rotor which stops the vehicle. If there’s a leak in the brake line, or if you have low levels of brake fluid, you’ll get less or no pressure from the pedal. This, of course, can be extremely dangerous. Brake lines also keep water away from your brake fluid, some are even made from gore-tex composite materials for this purpose.

If you’re noticing squeaky, slow or unsafe stops – you’ll want to check out your brakes. Come see us today.