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WHY IS IT IMPORTANT TO CHOOSE THE WELL BRAKE FLUID FOR YOUR VEHICLE?
25 September 2023
DOT 3 and DOT 4 brake fluids are used in automotive vehicles, they have some key differences in their characteristics and specifications such as:
- Boiling Point: One of the most important differences is the boiling point. DOT 4 brake fluid generally has a higher boiling point than DOT 3. This means that DOT 4 is less prone to evaporation under extreme braking conditions and is therefore better suited for high-performance applications. .
- ABS Compatibility: DOT 4 brake fluids are often recommended for vehicles equipped with anti-lock brake systems (ABS) due to their higher boiling point that can withstand the extreme braking demands of ABS systems. DOT 3, although functional, may not be as effective on vehicles with ABS.
- Compatibility: In general, DOT 4 is compatible with systems designed for DOT 3, meaning they can be mixed in most cases. However, it is not recommended to mix brake fluids with different DOT specifications unless absolutely necessary, as this can affect brake performance and safety.
- Quality Standards: Both DOT 3 and DOT 4 must meet the specifications and quality standards established by the United States Department of Transportation (DOT), which establishes performance and safety standards for brake fluids. However, DOT 4 has more stringent requirements in terms of boiling point, making it more suitable for high-performance applications.
In summary, the main difference between DOT 3 and DOT 4 brake fluid is their boiling point, with DOT 4 having a higher boiling point and therefore being more suitable for high performance applications and vehicles equipped with ABS systems. The choice between them depends on the type of vehicle and driving conditions. It is important to consult your vehicle’s owner’s manual and follow the manufacturer’s recommendations to ensure you use the proper brake fluid.