Product Information

Brake Fluid

Brake fluid is essentially hydraulic fluid which meets the standards set by the Society of Automotive Engineers (SAE) and the Department of Transportation (DOT). There are three main categories of brake fluid: DOT 3, DOT 4, and DOT 5. DOT 3 and 4 are polyglycol based while DOT 5 is synthetic brake fluid. Glycol based fluids are hygroscopic which is a benefit as the fluid absorbs any water which prevents water droplets from forming in the fluid. By absorbing the water, this in turn prevents water from collecting which could either boil, freeze or corrode components. Changing the brake fluid in your vehicle routinely will reduce the chances of boiling brake fluid which could lead to brake fade or loss of brake operation altogether.

Brake Fluid Failure Symptoms

• High moisture content causing low boiling point
• Dirty or tarnished color
• Boiling over of the brake system under extreme braking conditions