The Motul RBF600 Brake fluid is 100% synthetic fluid for hydraulic-actuated brake and clutch systems. Specifically designed to resist the high temperatures of actuated (steel or carbon) racing brakes and clutch systems. The elevated boiling point of RBF 600 being at 312 C / 593 F enables effective braking even under the extreme conditions of competition. The very high wet boiling point (216ºc / 420ºF), is superior to conventional brake fluids and provides a particularly efficient braking system in rain and retards the apparition of vapor lock. FMVSS 116 DOT 4 / SAE J 1703 / ISO 4925. The RBF600 Brake fluid is sold per bottle. 2 Bottles are recommended for a full system flush.