BOSCH DOT 4 Brake Fluid - Premium Hydraulic Braking System Protection

Purpose and Specifications

BOSCH 1 987 479 108 is a premium DOT 4 brake fluid designed to maintain safe, responsive braking in all driving conditions. This 5-liter container provides reliable hydraulic pressure transfer from your brake pedal to the wheels, ensuring consistent stopping power.

This fluid operates safely across a wide temperature range—from -40°C in extreme cold to 230°C at dry boiling point and 155°C when saturated with moisture. The fluid's thickness at freezing temperatures (1500 cSt at -40°C) ensures it flows properly even in harsh winter conditions, while maintaining pressure stability during intense braking.

When to Use and Replace?

Change your brake fluid every 2 to 3 years or 30,000 to 45,000 kilometers, whichever comes first. This interval applies to normal daily driving. However, replace sooner if you:

• Tow or haul frequently—change every 12 months or 20,000 km
• Drive in extreme climates or high-humidity environments
• Notice a spongy or hard brake pedal, longer stopping distances, or pulling to one side
• Use your vehicle for performance or track driving—change every 12 months or after track days

Brake fluid absorbs moisture from the air over time. After 24 months, moisture levels can reach dangerous thresholds that reduce braking performance and cause internal corrosion. Regular replacement prevents costly repairs to brake components.

Why BOSCH Premium?

BOSCH premium-grade DOT 4 fluid meets strict OEM standards and resists moisture absorption better than standard alternatives. The yellow color helps you identify fresh fluid during maintenance checks.

Frequently Asked Questions

Q: Can I mix DOT 4 fluids from different brands?
A: Yes, DOT 4 fluids are compatible with each other. However, stick with premium-grade BOSCH for consistent performance and corrosion protection.

Q: How do I know if my brake fluid needs changing before 2 years?
A: If your brake pedal feels spongy, requires harder pressure to stop, or your brakes pull to one side, have the fluid tested immediately. Moisture contamination can develop faster in humid climates.

Q: What's the shelf life of unopened BOSCH brake fluid?
A: Unopened containers remain stable for several years when stored in cool, dry conditions away from direct sunlight. Once opened, use within 12 months to prevent moisture absorption.