Brake fluid is a specialized hydraulic fluid used in braking systems to convert the force applied to the brake pedal into pressure, activating the brakes to stop the vehicle. It works by utilizing the incompressible nature of liquids to efficiently transmit force.
Understanding DOT Brake Fluid Specifications
The Department of Transportation (DOT) classifies brake fluids based on their boiling points and chemical composition. These specifications are crucial for ensuring the effectiveness and safety of braking systems.
Products
- SPEL Brake Fluid DOT 3
- SPEL Brake Fluid DOT 4
Here's a breakdown of the different DOT classifications:
- DOT 3: A baseline specification for brake fluids, suitable for most vehicles.
- DOT 4: Offers a higher dry and wet boiling point than DOT 3, providing improved performance in demanding conditions.
- DOT 5: Utilizes a silicone-based formula, offering exceptional resistance to moisture absorption and a very high boiling point. However, it may not be compatible with all braking systems.
- DOT 5.1: A newer specification combining the benefits of DOT 3 and DOT 4 with enhanced performance in high-temperature environments.
The DOT specifies two key reference tests for brake fluids:
Dry Boiling Point: The boiling point of the fresh fluid.
Wet Boiling Point: The boiling point after the fluid has absorbed moisture, representing real-world conditions.
A higher boiling point is essential to prevent brake fluid from vaporizing, which can lead to brake failure.