Dot 4 Brake Fluid

Understanding DOT 4 Brake Fluid

Brake fluid is a crucial component in the hydraulic braking systems of most vehicles. DOT 4 brake fluid is a specific type of hydraulic fluid designed to withstand high temperatures and pressures encountered during braking. This fluid is glycol-ether based, providing reliable performance in a range of operating conditions.

Types and Applications

While DOT 4 is a common brake fluid type, variations like DOT 4 LV (low viscosity) cater to modern vehicles with advanced braking systems. For high-performance needs, fluids such as Motul RBF 600 and RBF 660 offer higher boiling points. These fluids are suitable for a variety of vehicles, from daily drivers to racing cars, ensuring safety and efficiency across diverse applications.

Features and Materials

The composition of DOT 4 brake fluid includes additives that protect against corrosion and oxidation, which are essential for maintaining the integrity of brake system components. The fluid's hygroscopic nature means it absorbs moisture, a consideration for maintenance schedules. Compatibility with materials like rubber and metal found in brake systems is also a critical feature.

Advantages of DOT 4 Fluid

Choosing DOT 4 fluid offers several advantages, such as a higher boiling point compared to brake fluid 3 dot, which translates to better performance under stress. For those requiring even more robust solutions, brake fluid DOT 5.1 is an alternative, although DOT 4 remains the preferred option for its balance of performance and compatibility.

Standards and Specifications

DOT 4 brake fluid adheres to strict standards, such as SAE J 1703, ensuring its quality and performance. These standards are crucial for safety, dictating the fluid's physical and chemical properties. It's important to note that while upgrading to a higher specification fluid like ATE Typ 200 is possible, compatibility with the vehicle's braking system should always be confirmed.

Selection and Use

When selecting a brake fluid, it's essential to consider the vehicle's requirements and the fluid's specifications. While products like Castrol brake fluid DOT 4 are widely recognized, it's the responsibility of the vehicle owner or service provider to ensure the chosen fluid meets the necessary criteria without relying on brand recognition alone.