MOT Brake Fluid - RBF Fluid. RBF 600 FL - 0.500L AM - Fully Synthetic Racing Brake Fluid. Motul 1/2L Brake Fluid RBF 600 - Racing DOT 4. RBF 600 FL - 0.500L AM. TYPE OF USE: All types of hydraulic actuated brake and clutch systems requiring a non-silicone synthetic fluid.