2–3 Years or Test First: Brake Fluid Change Interval for U.S. Drivers

Plan a brake fluid change every 2–3 years or 30,000–45,000 miles. Test for moisture; replace if water is >3% or wet boiling point falls.

Plan a brake fluid change every 2–3 years or 30,000–45,000 miles. Test for moisture; replace if water is >3% or wet boiling point falls.