We Use CookiesWe use cookies to enhance the security, performance,
functionality and for analytical and promotional activities. By continuing to browse this site you
are agreeing to our privacy policy
10 Best Brake Fluids 2025 in the United States
Related Products
Up to 9% off
How do we rank products for you?
Our technology thoroughly searches through the online shopping world, reviewing hundreds of sites. We then process and analyze this information, updating in real-time to bring you the latest top-rated products. This way, you always get the best and most current options available.
Buying Guide for the Best Brake Fluids
Choosing the right brake fluid is crucial for the safety and performance of your vehicle. Brake fluid is a type of hydraulic fluid used in hydraulic brake and clutch applications in vehicles. It is responsible for transferring force into pressure, and amplifying braking force. When selecting brake fluid, it's important to understand the different specifications and how they impact your vehicle's braking system. Here are the key specifications to consider when choosing brake fluid:DOT RatingThe DOT rating indicates the boiling point and chemical composition of the brake fluid. Common ratings include DOT 3, DOT 4, and DOT 5.1. DOT 3 and DOT 4 are glycol-based fluids, while DOT 5.1 is a silicone-based fluid. Higher DOT ratings generally mean higher boiling points, which can be important for high-performance or heavy-duty vehicles. For everyday driving, DOT 3 or DOT 4 is usually sufficient, but for high-performance or racing applications, DOT 5.1 may be more appropriate.
Boiling PointThe boiling point of brake fluid is critical because it determines how well the fluid can handle heat. There are two types of boiling points to consider: dry and wet. The dry boiling point is the temperature at which new, uncontaminated fluid will boil, while the wet boiling point is the temperature at which fluid with a certain amount of water contamination will boil. Higher boiling points are better for high-performance or heavy-duty applications where the brakes generate a lot of heat. For regular driving, a standard boiling point is usually adequate.
ViscosityViscosity refers to the thickness of the brake fluid and its ability to flow at different temperatures. Brake fluid needs to maintain a consistent viscosity to ensure proper brake system operation in both hot and cold conditions. Low viscosity fluids are better for cold climates as they flow more easily at low temperatures, while higher viscosity fluids are better for maintaining performance in high temperatures. Consider your local climate and driving conditions when choosing the viscosity of your brake fluid.
CompatibilityNot all brake fluids are compatible with all vehicles. It's important to check your vehicle's owner manual to determine the recommended type of brake fluid. Using the wrong type can damage the brake system and reduce braking performance. Ensure that the brake fluid you choose is compatible with the materials used in your vehicle's brake system, such as rubber seals and metal components.
Moisture AbsorptionBrake fluid can absorb moisture from the air over time, which can lower its boiling point and reduce braking efficiency. Glycol-based fluids (DOT 3, DOT 4) are more hygroscopic, meaning they absorb moisture more readily, while silicone-based fluids (DOT 5) are less hygroscopic. If you live in a humid environment or do not change your brake fluid frequently, consider a fluid with lower moisture absorption properties.
Most Popular Categories Right Now
