How often is it recommended to change brake fluid?

Changing brake fluid every 2 years or as needed is recommended because brake fluid can absorb moisture over time, which can lead to a decrease in braking performance and potential corrosion of braking system components. Moisture in the fluid lowers its boiling point, which can lead to brake fade during heavy use. Additionally, manufacturers may have specific guidelines for their vehicles, but many suggest a regular interval to ensure safety and maintain the integrity of the braking system. Regular testing of brake fluid for moisture content may also indicate when a change is necessary, reinforcing the idea that it should be changed every couple of years or based on condition rather than a strict time frame. This helps in efficiently maintaining the vehicle's braking system and ensuring safe operation.