Description Reviews Motul 660 Brake Fluid can be used in any hydraulic actuated brake and clutch systems requiring non-silicone synthetic fluid. It is specially designed to resist to extreme temperature generated by racing carbon and ceramic brakes, allowing minimizing air entrance for brake cooling. It can be also used with conventional steel discs and clutch systems actuators. It will work with all makes and models. Motul RBF 660 is a 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. Motul RBF 660 far exceeds the standards of DOT 3, DOT 4, and DOT 5.1. The RBF 660 container is filled with Nitrogen to increase shelf life and eliminate contamination while factory sealed. Extremely high dry and wet boiling points help prevent vapor lock and brake fade during hard use. EXTREME THERMAL RESISTANCE AND STABILITY: The elevated dry boiling point of RBF 600 (325°c / 617°F) enables effective braking even under the extreme conditions of competition. VERY EFFICIENT WHEN RAINY: The very high wet boiling point (205°c / 401°F), is far superior to conventional brake fluids. It provides a particularly efficient braking system in rain and fights the cause of "vapor lock" phenomena. The wet boiling point is measured by humidifying the product with about 3.5 percentage of water 500ml Bottle Note: You will only need two bottles for most cars depending on the type of flush, but having a third extra bottle on hand is a good idea. As long as you do not break the inner seal on the bottle it will last on the shelf, no problem. Once you open brake fluid, it should be used in 6 months or less or be recycled.