Purpose and Specifications

TRW PFB445SE is a DOT 4 ESP brake fluid engineered for modern vehicles with electronic stability control systems. This premium fluid is designed to work with ABS and ESP systems that require rapid pressure modulation—measured in milliseconds—to prevent skidding and maintain vehicle control during emergency braking.

The fluid's low viscosity formula (thinner than standard DOT 4) flows quickly through the tiny channels in ABS hydraulic units, allowing faster pressure changes. This means shorter stopping distances and better stability, especially in challenging driving conditions.

Key Performance Features:

• Dry boiling point of 260°C—stays effective even under extreme braking stress
• Works safely in temperatures from -50°C to +50°C, so it performs in winter cold and summer heat
• Contains advanced lubricants, stabilizers, and corrosion inhibitors to protect brake components
• Exceeds international DOT specifications for safety margins
• Compatible with DOT 3, DOT 4, and DOT 5.1 fluids if mixing is necessary

When to Use and Replace

Replace your brake fluid every 2 years as part of regular maintenance. Brake fluid absorbs moisture from the air over time, which lowers its boiling point and reduces braking performance. Fresh fluid ensures your brakes respond instantly when you need them most.

Use TRW PFB445SE if your vehicle manufacturer specifies DOT 4 or DOT 4 ESP fluid. Check your owner's manual or brake fluid reservoir cap for the correct specification.

Frequently Asked Questions

Q: Can I mix this with other brake fluids?
A: Yes. TRW PFB445SE mixes safely with DOT 3, DOT 4, and DOT 5.1 fluids. However, always follow your vehicle manufacturer's recommendation for the best performance.

Q: Why does brake fluid need replacing if it looks clean?
A: Brake fluid absorbs invisible moisture from the air. Even though it looks fine, this moisture reduces the boiling point, making brakes less responsive under hard braking. Changing it every 2 years keeps your brakes reliable.

Q: Is this fluid suitable for motorcycles and cars?
A: Yes. TRW PFB445SE is approved for passenger cars, motorcycles, and commercial vehicles with DOT 4 or DOT 4 ESP requirements.