How to Replace Vehicle Brake Fluid?

[McGianna]

Vehicle brake fluid replacement method is: 1. Park the vehicle on level ground and turn off the engine, open the engine compartment cover and drain the fluid from the reservoir; 2. Use a funnel to fill the reservoir with new brake fluid; 3. Go inside the vehicle and press the brake pedal until the fluid level in the engine compartment reservoir reaches the lower limit. Situations requiring brake fluid replacement include: 1. When brake fluid absorbs moisture or contains impurities; 2. When experiencing inconsistent braking during normal driving, the brake fluid should be promptly replaced; 3. When the wheel cylinder rubber cup expands excessively; 4. Brake fluid should be replaced every two years. The function of brakes is to reduce speed or bring the vehicle to a stop, and its working principle is: By utilizing friction between brake pads and brake drums, as well as between tires and the ground, the kinetic energy of the moving vehicle is converted into heat energy through friction, thereby slowing down or stopping the vehicle.

[LaCameron]

As someone who frequently helps friends with car repairs, I'd like to share my experience with changing brake fluid. Step 1: Prepare the tools - new brake fluid that meets the vehicle specifications (such as DOT 4), a wrench, an oil pan, and a suction tube. Safety is crucial - after parking, engage the handbrake and securely stabilize the wheels with a jack. Start bleeding from the rear wheels as they're the farthest, loosen the bleeder screw to let the old fluid drain into the pan. The reason for changing is that old fluid absorbs moisture, lowering its boiling point and reducing braking performance. Keep topping up the reservoir with new fluid during bleeding to prevent air ingress. Then bleed the system: pump the brake pedal several times until it feels firm, indicating air removal. After completion, test the brakes at low speed several times to ensure proper function. Remember to change every 2-3 years or 20,000 km for safety, and if inexperienced, visit a professional shop to avoid risks.

[DiRuth]

Last time I tried changing the brake fluid myself, the process was lengthy but worthwhile. First, it took time to buy new fluid and tools, then I parked the car on level ground and set up safety triangles. I started with the rear wheels to drain the old fluid—dark and dirty, indicating it was aged and needed replacement. While doing this, I checked the reservoir and topped it up with new fluid to maintain the level. The bleeding part required a helper to press the brake pedal, otherwise, air could get in and make things difficult. After the change, the brakes felt more responsive. Generally, it's recommended to change it every two years to prevent moisture absorption and failure. I did spill some fluid and made a mess, so I'd recommend getting assistance or opting for a professional service for peace of mind. DIY saves money and teaches you something new.

[StZane]

I never DIY brake fluid changes because of the high risks. Aged brake fluid containing moisture can corrode the system, and improper replacement may lead to brake failure. I get it professionally done at the shop every two years—they use tools to bleed and test it quickly. Safety first, don't take risks. Normally, just checking the fluid level is enough for protection.