WHY DO YOU HAVE TO CHANGE THE BRAKE FLUID AND HOW OFTEN SHOULD YOU DO IT?

Brake fluid loses its properties over time. As it gets older, it absorbs moisture from the air, accumulating water. When this fluid passes through areas of high temperature in the brake circuit (tweezers and bowlers) water turns to steam, creating air bubbles which produce a spongy feeling in the brake pedal and a substantial decrease in the effectiveness of the system.

Periods of the brake fluid replacement must be established by the manufacturer, but as a general rule and as a reference brake fluid should be changed roughly every 40,000 km or every two years.