In what scenario should you change your brake fluid?

Changing brake fluid at regular intervals is important for maintaining the safety and efficiency of your vehicle's braking system. Over time, brake fluid can absorb moisture from the air, which can lead to a decrease in boiling point and overall effectiveness. This can cause the brake fluid to become less effective, especially under heavy use. Regularly changing the brake fluid ensures that it remains at optimal performance levels, helping to prevent brake failure and maintain a firm brake pedal feel.

While the other scenarios mentioned can indicate potential issues, they do not replace the need for routine maintenance. For example, dirty fluid may suggest that it should be changed, and spongy brakes could indicate air in the line or other issues, but these signs may not always coincide with regular maintenance schedules. Smelling bad is not a standard indicator for changing brake fluid. Hence, routine replacement is a proactive measure to ensure that your braking system functions safely and reliably.