How often should brake fluid be changed according to standard maintenance recommendations?

Brake fluid should typically be changed every 2 to 3 years, as moisture can accumulate in the brake fluid over time, which can lead to corrosion and decreased braking performance. However, guidelines can vary slightly based on the vehicle manufacturer's recommendations and the type of brake fluid used.

The recommended intervals for changing brake fluid are not commonly expressed solely in mileage, as they often relate more to time due to its hygroscopic nature (ability to absorb moisture). While the answer provided suggests every 25,000 miles, this is generally considered less common. Many manufacturers recommend changing brake fluid more aligned with a time frame of every 2-3 years or sometimes linked to specific mileage as part of a larger maintenance schedule.

Using the intervals mentioned in the choices, it's important to note that the best practice is to always refer to the vehicle manufacturer’s manual for the most accurate maintenance schedule for brake fluid.