Brake Fluid

Brake Fluid: Explained

Brake fluid is an essential component of your vehicle's braking system. It is the medium that transfers the force from your foot on the brake pedal to the brake calipers, enabling your car to slow down or stop. This page is dedicated to providing you with comprehensive information about brake fluid, its importance, types, and how to choose the right one for your vehicle.

Why is Brake Fluid Important?

Brake fluid plays a crucial role in your vehicle's safety and performance. Here's why:

  • Pressure Transmission: When you press the brake pedal, the brake fluid transfers this force to the brake calipers, causing the brake pads to clamp onto the rotors and slow down your vehicle.
  • Heat Resistance: Brakes generate a lot of heat, especially during high-speed driving or sudden stops. Brake fluid is designed to withstand these high temperatures without boiling, ensuring consistent brake performance.
  • Corrosion Prevention: Brake fluid has anti-corrosion properties that protect the internal components of the braking system from rust and corrosion.

Types of Brake Fluid

There are several types of brake fluid, each with its own specifications and applications. The most common types are:

  • DOT3: This is a glycol-based fluid suitable for most standard vehicles. It has a lower boiling point compared to other types.
  • DOT4: Also glycol-based, DOT4 has a higher boiling point than DOT3, making it suitable for vehicles that require better brake performance, such as sports cars.
  • DOT5: This is a silicone-based fluid with a high boiling point. It's typically used in classic cars because it doesn't absorb water and cause corrosion.
  • DOT5.1: This is a glycol-based fluid like DOT3 and DOT4 but with a boiling point even higher than DOT5. It's used in high-performance and heavy-duty vehicles.

Choosing the Right Brake Fluid

Choosing the right brake fluid for your vehicle depends on several factors:

  • Vehicle Specifications: Check your vehicle's manual for the manufacturer's recommended brake fluid type.
  • Driving Conditions: If you frequently drive in high-temperature conditions or use your vehicle for racing, a brake fluid with a higher boiling point (like DOT4 or DOT5.1) may be beneficial.
  • Vehicle Age: Older vehicles may require a specific type of brake fluid (like DOT5) to prevent corrosion.

When to Change Brake Fluid

Brake fluid should be changed every two years or as recommended by your vehicle's manufacturer. Signs that your brake fluid may need changing include a spongy brake pedal, decreased brake performance, or a warning light on your dashboard.


Choosing the right brake fluid is crucial for your vehicle's safety and performance. Whether you're a car enthusiast looking to enhance your vehicle's braking performance or a regular driver wanting to maintain your vehicle's safety, understanding brake fluid can make a significant difference. Remember to always refer to your vehicle's manual and consult with a professional if you're unsure.

At Compare.Parts, we offer a wide range of brake fluids from top manufacturers. Browse our selection and find the perfect brake fluid for your vehicle today.





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