Purpose and Specifications

ATE DOT 4 Brake Fluid (03.9901-6411.2) is a premium glycol-based hydraulic fluid in a 20-liter can, perfect for professional shops servicing cars, trucks, and motorcycles with ABS and stability control systems. It delivers high-temperature resistance up to 260°C dry boiling point, preventing brake fade during heavy braking, towing, or mountain driving, while staying fluid down to -40°C for reliable cold starts.

This moisture-absorbing formula protects calipers, master cylinders, and seals from rust and corrosion, extending brake life. Compatible with DOT 3 systems, it offers superior lubricity to reduce wear on moving parts and maintains consistent pressure for safer stops.

• Volume: 20 liters for bulk fleet service
• Operating Range: Reliable from -40°C to over 260°C
• Shelf Life: Up to 5 years unopened

When to Use / Replace?

Use ATE DOT 4 for everyday commuting with frequent stops, heavy loads, or performance driving where brakes heat up fast. Replace every 2 years or 40,000 km to counter moisture buildup that lowers boiling point and risks vapor lock. Check fluid color - dark or cloudy means flush now for safety.

Ideal for severe conditions like track days or towing, where it outperforms DOT 3 by resisting fade longer.

FAQ

Q: Can I mix this with DOT 3 fluid?
A: Yes, fully compatible - top off safely, but flush completely for peak performance.

Q: How often should I change brake fluid?
A: Every 2 years or 40,000 km, or sooner if driving hard or in humid areas.

Q: Is it safe for my ABS system?
A: Absolutely - flows smoothly at low temps for quick ABS response.