Braker Mineral is a high-performance brake fluid designed for all hydraulic brake systems running on Mineral brake fluid. All our brake fluids have undergone extensive testing and development in our Lab and are suitable for the highest demands such as professional racing. Our special formula ensures a very high boiling point, no brake fading and maximum braking power even in changing conditions. Tips : Used with Shimano Systems. We recommend changing the Brake Oil maximum every 2 years. Every year would be ideal and best.