What is the replacement interval for brake fluid?

[OLena]

Brake fluid should be replaced approximately every two years or 40,000 kilometers, whichever comes first. Characteristics of brake fluid: 1. Good viscosity-temperature performance with a low freezing point, ensuring excellent fluidity in low-temperature conditions; 2. High boiling point, preventing vapor lock formation under high temperatures; 3. Minimal quality degradation, avoiding corrosion or deterioration of metal and rubber components. The brake fluid replacement procedure is as follows: 1. Park the vehicle on level ground, turn off the engine, open the hood, and drain the old fluid from the reservoir; 2. Use a funnel to refill the reservoir with new brake fluid; 3. Jack up the vehicle and begin tire removal starting with the rear wheels; 4. Remove the rubber dust caps from the brake calipers; 5. Loosen the bleeder screws using a wrench, attach rubber hoses, and connect them to a drainage bottle; 6. Have an assistant pump the brake pedal while monitoring fluid drainage until the reservoir level reaches the minimum mark in the engine compartment.