Purpose and Specifications

ATE DOT 3 Brake Fluid (03.9901-0301.2) is a premium 0.5-liter can designed for reliable braking in passenger cars, trucks, and motorcycles with disc or drum systems. This high-quality glycol-based fluid from ATE ensures crisp brake response by resisting vapor formation up to 205°C dry boiling point, keeping your pedal firm during normal driving.

It protects cast iron, steel, aluminum, and other metals from corrosion with a buffered formula that fights acidic buildup, while maintaining seals to prevent leaks and pressure loss. Excellent lubricity reduces wear on moving parts for longer system life.

• Volume: 0.5 liters - perfect for top-ups or full flushes
• Operating Range: Stays fluid down to -40°C for cold starts, thick enough at high heat
• Shelf Life: Up to 3 years unopened; use within 12-24 months after opening

When to Use / Replace?

Use ATE DOT 3 in vehicles specifying DOT 3 fluid, including older models without ABS or hydraulic clutches. It's ideal for everyday driving but upgrade to DOT 4 for heavy towing, track use, or modern ABS systems needing higher heat resistance.

Replace every 2 years or 40,000 km due to moisture absorption (up to 2% per year), which lowers boiling point and risks brake fade. Signs include soft pedal, longer stops, or dashboard warnings - flush immediately for safety.

FAQ

Q: Can I mix ATE DOT 3 with DOT 4?
A: Yes, they're compatible, but for best performance, flush the system and use one type consistently.

Q: Is this safe for ABS brakes?
A: Suitable for basic ABS; check your manual - many modern systems prefer DOT 4 for faster response.

Q: How do I know when to change it?
A: Every 2 years/40,000 km, or if fluid looks dark brown/black instead of clear amber.