Quick summary
- It transmits hydraulic pressure from the master cylinder to the brake calipers or wheel cylinders, which in turn actuate the brake pads or shoes.
- A spongy or soft brake pedal may be a sign of air in the brake lines or degraded brake fluid.
- Have an assistant pump the brake pedal while you open and close the bleeder screw to flush out the old fluid and replace it with new fluid.
Maintaining a vehicle’s braking system is crucial for ensuring safety and optimal performance. One common question that often arises among car owners is: “Does brake fluid get changed in service?” To answer this query comprehensively, let’s delve into the importance, frequency, and process of brake fluid replacement.
The Importance of Brake Fluid
Brake fluid plays a vital role in the proper functioning of a vehicle’s braking system. It transmits hydraulic pressure from the master cylinder to the brake calipers or wheel cylinders, which in turn actuate the brake pads or shoes. Without brake fluid, the braking system would be unable to generate the necessary force to slow down or stop the vehicle.
Brake Fluid Degradation
Brake fluid, like other fluids in a vehicle, is subject to degradation over time due to factors such as heat, moisture, and contamination. As it degrades, it can lose its effectiveness and pose risks to the braking system.
- Moisture Absorption: Brake fluid absorbs moisture from the surrounding air, which can lead to a decrease in its boiling point. This can cause the fluid to vaporize under high temperatures, resulting in brake fade or failure.
- Contamination: Brake fluid can become contaminated with dirt, metal particles, or other substances, which can clog the brake lines and damage components.
Frequency of Brake Fluid Replacement
The recommended frequency for brake fluid replacement varies depending on the vehicle make, model, and driving conditions. Generally, most manufacturers recommend changing brake fluid every 2-3 years or 30,000-50,000 miles. However, it’s advisable to consult your vehicle’s owner’s manual for specific guidelines.
Signs Indicating the Need for Brake Fluid Replacement
In addition to following the recommended replacement schedule, there are certain signs that may indicate the need for brake fluid replacement:
- Dark or Cloudy Fluid: Fresh brake fluid is typically clear or slightly amber in color. If it becomes dark or cloudy, it may be contaminated or degraded.
- Low Brake Fluid Level: A low brake fluid level can indicate a leak or excessive moisture absorption.
- Spongy or Soft Brake Pedal: A spongy or soft brake pedal may be a sign of air in the brake lines or degraded brake fluid.
- Unusual Noises: Squealing or grinding noises during braking may indicate that the brake pads are worn and the brake fluid is contaminated.
Brake Fluid Replacement Process
Changing brake fluid is a relatively straightforward process that can be performed at home with the right tools and safety precautions. However, it’s always recommended to consult a qualified mechanic if you’re not comfortable working on your vehicle.
The brake fluid replacement process typically involves the following steps:
1. Gather necessary tools and materials (e.g., new brake fluid, brake bleeder kit, rags).
2. Safety first: Wear gloves, eye protection, and ensure the vehicle is parked on a level surface.
3. Locate the brake fluid reservoir and open it carefully.
4. Use a turkey baster or syringe to remove the old brake fluid from the reservoir.
5. Connect the brake bleeder kit to the bleeder screw on each brake caliper or wheel cylinder.
6. Have an assistant pump the brake pedal while you open and close the bleeder screw to flush out the old fluid and replace it with new fluid.
7. Repeat the process for each brake caliper or wheel cylinder.
8. Check the brake fluid level in the reservoir and top it up as needed.
9. Test the brakes and ensure they are functioning properly.
Beyond Brake Fluid Replacement
In addition to regular brake fluid replacement, there are other aspects of brake maintenance that are equally important:
- Brake Pad Replacement: Brake pads wear out over time and need to be replaced periodically.
- Brake Rotor Inspection: Brake rotors should be inspected for wear, warping, or damage.
- Brake Line Inspection: Brake lines should be inspected for leaks, corrosion, or damage.
Takeaways
Brake fluid replacement is an essential part of vehicle maintenance that helps ensure the proper functioning of the braking system. By following the recommended replacement schedule and addressing any signs of brake fluid degradation, you can maintain optimal braking performance, enhance safety, and extend the lifespan of your vehicle’s braking components.
Basics You Wanted To Know
Q: How often should I change my brake fluid?
A: The recommended frequency varies, but generally every 2-3 years or 30,000-50,000 miles.
Q: What are the signs of brake fluid degradation?
A: Dark or cloudy fluid, low fluid level, spongy brake pedal, and unusual noises during braking.
Q: Can I change brake fluid myself?
A: Yes, it’s possible with the right tools and safety precautions, but it’s recommended to consult a mechanic if you’re not comfortable.
Q: What type of brake fluid should I use?
A: Refer to your vehicle’s owner’s manual for the recommended brake fluid type and specifications.
Q: What happens if I don’t change my brake fluid?
A: Degraded brake fluid can compromise braking performance, increase the risk of brake failure, and damage brake components.
