What the big deal about copper?
Government research confirmed that copper can form deposits around the sealing surfaces of ABS valves, which means your car may take longer to stop in a panic situation. Other research finds that copper levels in the brake fluid are the best indicators that the fluid’s corrosion inhibitors are losing their punch and major corrosion is just around the corner. Copper provides a verifiable means of determining brake fluid condition. Copper is used in the brake lines of the brake system. That is the primary source for copper in the brake fluid.
