You should generally replace your brake fluid every few years, with the most precise timing determined by your vehicle's manufacturer.
Maintaining fresh brake fluid is crucial for the safety and performance of your vehicle's braking system. Over time, brake fluid can absorb moisture, which lowers its boiling point and can lead to brake fade, especially under heavy braking. The frequency at which you need to change it isn't a single, universal rule but varies significantly depending on your specific car.
Follow Manufacturer Recommendations
The most reliable source for determining your brake fluid change interval is your vehicle's manufacturer. Their engineers have designed the system and tested its components under various conditions, providing the most accurate recommendation for maintaining optimal performance and safety.
You can find this information in your car's owner's manual or by consulting a dealership service department.
Common Manufacturer Guidelines
Based on manufacturer recommendations, brake fluid replacement intervals often fall within these ranges:
- Every two years: Some manufacturers specify a relatively frequent change.
- Every three years: A common recommendation from many automakers.
- Every 45,000 miles: Some recommendations are based on mileage rather than strict time intervals.
It's important to check your specific vehicle's recommendations, as they may differ from these common examples.
Here's a simple overview of typical guidance:
| Source | Recommendation |
|---|---|
| General Guideline | Every few years |
| Some Manufacturers | Every 2 years |
| Other Manufacturers | Every 3 years or Every 45,000 miles |
Regularly checking your brake fluid level and having its condition assessed by a qualified mechanic during routine service can also help identify if a change is needed sooner than the recommended interval, though following the manufacturer's schedule is the standard practice.
