What brake fluid does Brz take?
The BRZ uses DOT 4 brake fluid.
In practice, this glycol-based fluid is chosen for its higher boiling point and compatibility with modern ABS/ESC systems found on the Subaru BRZ and its Toyota 86 twin. While DOT 4 is the standard specification, some model years or regional manuals may allow DOT 5.1 as an alternative for higher performance, but silicone-based DOT 5 is not recommended for BRZ systems. Always confirm the exact requirement in your owner's manual or with a dealer before purchasing fluid.
Brake Fluid Requirements for the BRZ
Compatible fluid types
Here are the commonly used options and how they apply to BRZ maintenance. Before choosing, verify the exact specification for your model year and region.
- DOT 4 glycol-based brake fluid (the standard, recommended choice for most BRZ models).
- DOT 5.1 glycol-based brake fluid (higher boiling point than DOT 4; can be used if your manual allows it and you want a higher-performance option).
Bottom line: For most BRZ applications, DOT 4 is the default; DOT 5.1 is an acceptable alternative only if your manual permits it. Do not use DOT 5 silicone-based fluid in this system.
Maintenance and Compatibility Considerations
To ensure optimal braking performance, follow the manufacturer’s guidance on replacement intervals and compatibility. If you switch fluid types, perform a complete system flush to prevent seal or ABS compatibility issues.
- Follow the owner's manual for the exact fluid specification and replacement interval (commonly every 1–2 years, but check your model year).
- Avoid mixing different brake fluids; if you change types, flush the entire system.
- Use a high-quality fluid from a reputable brand and store it properly to prevent moisture contamination.
In short, sticking with the recommended DOT 4 (or DOT 5.1 if allowed by your manual) and staying current with replacements helps maintain braking performance and system longevity.
Summary
For the Subaru BRZ (and its Toyota 86 counterpart), DOT 4 brake fluid is the standard requirement. DOT 5.1 can be considered as an alternative if explicitly allowed by your manual, while DOT 5 silicone-based fluid is not recommended. Always verify the exact specification in your vehicle’s manual and adhere to the recommended maintenance schedule to keep the braking system performing safely.
