What kind of brake fluid does Acura use?
Most Acura models use DOT 4 brake fluid, typically glycol-based with a high boiling point. Some older or specific models may call for DOT 3. Always verify the exact specification for your year and model by checking the owner's manual or the brake fluid reservoir cap.
Understanding Acura's brake fluid requirements
Brake fluid must meet a Department of Transportation (DOT) specification and is hygroscopic, meaning it absorbs moisture over time. Acura’s braking systems are designed around glycol-based fluids (DOT 3, DOT 4, or higher). Silicone-based DOT 5 is not commonly used in most Acura applications and is not compatible with ABS systems unless explicitly specified by Acura. Always use the grade your vehicle requires and avoid mixing different DOT grades in the same system.
To help owners verify the correct fluid for their car, consider the following steps:
- Check the owner's manual for the exact DOT grade (for example: DOT 3, DOT 4, or DOT 5.1) required by your model and year.
- Inspect the brake fluid reservoir cap, which often lists the recommended grade or minimum boiling point.
- If the manual isn’t available, consult a dealer or certified service center for the precise specification.
- Maintain glycol-based fluids only; avoid silicone-based DOT 5 unless Acura explicitly specifies it for your model.
- Never mix different DOT grades within the same hydraulic system; if changing grade is necessary, flush the system.
- For normal driving, DOT 4 is typically sufficient; for high-temperature or performance driving, DOT 4+ or DOT 5.1 may be recommended by the manual or dealer.
Concluding: By following these guidelines and relying on official documentation, you can ensure your Acura brake system receives the correct fluid and maintains optimal braking performance.
Summary
In short, Acura generally uses glycol-based brake fluids, with DOT 4 being the standard for most modern models and DOT 3 appearing in older ones. Always verify the exact specification for your vehicle, avoid silicone-based DOT 5 unless explicitly stated, and never mix different DOT grades. Regular checks and proper fluid maintenance help preserve braking performance and component longevity.
