Brake fluid should generally be changed every 2 to 3 years, regardless of mileage, as recommended by most vehicle manufacturers. This interval is advised because brake fluid absorbs moisture over time, which can reduce its effectiveness and lead to corrosion and brake failure
. Key points about brake fluid change frequency:
- Typical interval: Every 2 years is common, though some manufacturers recommend every 3 years or about every 30,000 to 45,000 miles
- Why change it: Brake fluid is hygroscopic (absorbs moisture), which lowers its boiling point and can cause vapor lock or corrosion in the braking system
- Visual inspection: Regularly check the fluid's color and level; dark or coffee-colored fluid indicates it needs changing
- Driving conditions: Frequent stop-and-go driving, high humidity, or mountainous terrain may warrant more frequent changes
- Professional service recommended: Changing brake fluid requires proper handling and the correct type of fluid; it is best done by a trained mechanic
In summary, changing brake fluid every 2 to 3 years is a good rule of thumb to maintain braking performance and safety, with adjustments based on your vehicle's manual and driving conditions
