Purpose and Specifications

VALEO Brake Fluid DOT 4 (402402) is a synthetic hydraulic fluid designed for modern braking systems, including vehicles equipped with ABS and ESP safety features. This 500ml bottle meets international safety standards (ISO 4925 Class 6, SAE J 1704, FMVSS 116) and delivers reliable stopping power in both everyday driving and demanding conditions.

The fluid maintains its effectiveness across a wide temperature range, with a dry boiling point of 245°C—meaning it resists vapor lock and brake fade even under heavy braking or high-temperature driving. Its synthetic composition ensures consistent performance and better protection against moisture absorption compared to conventional fluids.

When to Use / Replace?

Replace your brake fluid every 1 to 2 years, regardless of mileage. Brake fluid naturally absorbs moisture from the air over time, which lowers its boiling point and reduces braking effectiveness. This is especially important if you drive in humid climates or use your vehicle frequently for towing or mountain driving.

Signs you need a fluid change include:

• Soft or spongy brake pedal feel
• Brake warning light on your dashboard
• Reduced braking responsiveness
• Fluid that appears dark or discolored

Always check your vehicle's owner manual for the correct DOT specification. VALEO DOT 4 is compatible with most modern passenger cars and light commercial vehicles.

Frequently Asked Questions

Q: Can I mix DOT 4 with other brake fluid types?
A: No. Never mix DOT 4 with DOT 3 or DOT 5 fluids. Different types have incompatible chemical compositions and can damage your braking system. Always use the specification recommended in your vehicle manual.

Q: How long does an unopened bottle last?
A: An unopened bottle of brake fluid typically remains usable for 3 to 5 years when stored in a cool, dry place away from direct sunlight. Once opened, use the fluid within a few months to prevent moisture contamination.

Q: Is this fluid suitable for older vehicles?
A: Check your vehicle's manual first. VALEO DOT 4 works with most modern cars (post-1990s), but some older vehicles may require DOT 3. Using the wrong specification can compromise braking safety.