To flush brake fluid properly, follow these steps:

Tools and Materials Needed

• Fresh brake fluid (correct type for your vehicle)
• Wrench for bleeder screws
• Clear tubing
• Catch container
• Turkey baster or syringe
• Safety gloves and eyewear

Step-by-Step Brake Fluid Flush Procedure

1. Prepare the Vehicle
   • Park the car on a level surface with the parking brake engaged.
   • Open the hood and locate the brake master cylinder reservoir.
   • Remove the cap and clean around it to prevent contamination.
2. Remove Old Fluid from Master Cylinder
   • Use a turkey baster or syringe to suck out as much old fluid as possible from the master cylinder reservoir to avoid mixing old and new fluid

3. Refill Master Cylinder
   • Fill the reservoir with fresh brake fluid to the recommended level.
   • Keep the cap off or loosely placed to allow air to escape during bleeding

4. Bleed the Brakes
   • Start with the wheel farthest from the master cylinder (usually the rear passenger side).
   • Attach clear tubing to the bleeder screw on the brake caliper or wheel cylinder; place the other end into a catch container.
   • Have an assistant press the brake pedal fully, then open the bleeder screw with a wrench to let fluid flow out.
   • Close the bleeder screw before the assistant releases the brake pedal to avoid air entering the system.
   • Repeat this pumping and bleeding cycle until the fluid runs clear and free of air bubbles.
   • Move to the next wheel in the order: rear passenger, rear driver, front passenger, front driver

5. Monitor Fluid Level
   • Frequently check and top off the master cylinder reservoir during bleeding to prevent it from running dry, which would introduce air into the brake lines

6. Finish Up
   • Once all wheels have been bled and the fluid is clear, tighten all bleeder screws securely.
   • Replace the master cylinder cap.
   • Test the brake pedal for firmness; if it feels spongy, repeat bleeding to remove any remaining air

7. Clean Up
   • Dispose of old brake fluid properly.
   • Clean any spilled fluid immediately as brake fluid can damage paint and is corrosive.

This process removes old, water-contaminated brake fluid and replaces it with fresh fluid, ensuring optimal brake performance and safety

. The entire procedure can be done with one person using proper tools or with a helper for easier pedal pumping

. Safety Note: Always wear gloves and eye protection when working with brake fluid, and avoid contact with painted surfaces