![]() Silicone-based (DOT 5): This fluid is hydrophobic, meaning it doesn’t absorb water.Glycol-based brake fluid is often used in performance cars with anti-lock brake systems (ABS). Glycol-based (DOT 3, DOT 4, and DOT 5.1): These fluids are hygroscopic, meaning they absorb water over time.There are two popular types of brake fluids available: The higher the number, the greater its ability to withstand high temperatures and deliver greater performance. ![]() The DOT classifies brake fluid using a number between 3 and 5.1. Brake fluid is hygroscopic which helps it absorb moisture, lowering its boiling point and accelerating possible braking failure.Īdditionally, brake fluid lubricates moving parts inside the braking system and helps prevent corrosion. The resulting friction will slow down or stop the vehicle, depending on the level of pressure applied to the brake pedal.ĭuring operation moisture can condense in the braking system.The caliper pistons squeeze the brake pads against the rotors, which applies friction to the wheels.The master cylinder sends the pressurized brake fluid through the brake lines and hoses to the caliper pistons.Pressing down on the brake pedal creates hydraulic pressure in the master cylinder, which stores the brake fluid.What Does Brake Fluid Do?Įver wonder how you can stop a 4,000-pound vehicle that’s going over 60 miles per hour? Brake fluid plays an integral role in that process. Let’s take a look at what brake fluid does, the types of brake fluids available, and when to change your brake fluid. Feeling a bit lost amidst all these technical terms? No worries, we've got you covered! Moreover, if your vehicle requires the use of Department Of Transportation (DOT) 5 brake fluid, expect to spend more compared to DOT 3 or DOT 4 alternatives. If you own a luxury vehicle or one equipped with intricate brake systems, brace yourself for a potentially higher cost. Let’s jump straight to the point: How much does a brake fluid change cost? The price tag can fluctuate based on several factors, including your vehicle's make and model, the type of brake fluid used, and the level of complexity involved in the process.
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