Caution! Brake fluid can be harmful to your eyes and to your vehicle if it comes into contact with painted surfaces. Do not use brake fluid that has been sitting in an open container for some time or that is more than one year old. Brake fluid is highly hygroscopic - it absorbs moisture from the atmosphere. Excess moisture in the fluid can lead to loss of brake effectiveness.
1. Brake fluid should be replaced according to the service schedule. Take precautions to prevent the fluid from coming into contact with painted surfaces of the car body - place a sufficient amount of rags around the master cylinder.
2. Before starting work, stock up on a sufficient quantity of fresh brake fluid of the recommended type (see Recommended Oils and Fluids at the beginning of this chapter).
3. Remove the cap from the brake fluid reserve reservoir on the master cylinder.
4. Using a hand pump, syringe or other similar tool, pump the liquid out of the tank.
5. Fill the reservoir with fresh brake fluid up to the base of the filler neck
6. Bleed the brake system as described in Chapter 9 on all four wheels until new fluid flows from the valves without any signs of contamination. While bleeding, maintain the brake fluid level in the reservoir to prevent air from entering the brake cylinder.
7. After completing the work, add fluid to the reservoir to the required level and check the operation of the brakes. When pressed, the pedal should feel a firm stop without any give.
Warning: Do not drive if you have any doubts about the reliability of your brakes.
Content based on information from MazBook