Purpose and Specifications

ATE DOT 5.1 Brake Fluid (03.9901-6612.2) is a premium glycol-based formula in a 1-liter can, perfect for high-performance braking in modern vehicles. It delivers rock-solid stopping power even under extreme heat, with a dry boiling point over 260°C to stop brake fade on long descents or track days, and a wet boiling point above 180°C after absorbing moisture over time.

This fluid flows smoothly at -40°C for crisp ABS response in freezing winters, protects against corrosion to extend caliper and master cylinder life, and mixes safely with DOT 3 or DOT 4. Unlike silicone DOT 5, it's fully compatible with your existing system.

• High heat resistance: Handles intense braking without vapor lock.
• Cold weather reliability: Stays fluid in sub-zero temps for quick stops.
• Longer component life: Built-in inhibitors fight rust and wear.

When to Use / Replace?

Use ATE DOT 5.1 for demanding drives like towing, mountains, racing, or any vehicle with advanced ABS/ESP systems. Upgrade from DOT 4 for better heat handling in performance setups from brands like Brembo or EBC.

Replace every 2 years or 40,000 km, as it absorbs water that lowers boiling point and causes corrosion. Shelf life is 3-5 years unopened; check for darkening or mushy pedal feel as signs it's time to flush.

FAQ

Can I mix this with DOT 4? Yes, both are glycol-based and safe to mix, but flush completely for max performance.

Is DOT 5.1 better than DOT 4 for track use? Absolutely, its higher boiling points prevent fade during repeated hard stops.

How do I know when to change it? Every 2 years or if the fluid looks dark brown; always bleed the system fully.