Extremely important and often overlooked, brake fluid is the medium that transmits energy from pressure on the brake pedal to the caliper and wheel cylinder pistons. All brake fluids eventually wear out. Raybestos® brand brake fluid is manufactured with corrosion inhibitors to help protect the brake system. Corrosion can pit the bores of the master cylinder, calipers, wheel cylinders, and ABS components. Some manufactures recommend flushing the brake system every 2 years or 24 thousand miles. Consult your owner's manual for your vehicle's brake fluid type and service recommendation. Brake fluid absorbs moisture and can damage paint. Use caution when handling brake fluid.