MOTUL RBF 660 is full 100% synthetic brake fluid specifically designed to resist the high temperatures of racing brake pads and clutch system. MOTUL RBF 660 far exceeds the standards of DOT3, DOT4, and DOT 5.1 with extremely high dry and wet boiling points to prevent vapor lock and brake fade.

EXTREME THERMAL RESISTANCE AND STABILITY: The extremely high dry boiling point of RBF 660 (325°c / 617°F) enables effective braking under even the most extreme conditions of racing and competition.

HIGH EFFICIENCY WHEN RAINY: The very high wet boiling point (204°c / 400°F) is superior to conventional brake fluids and provides a particularly efficient braking system in rainy conditions, resisting vapor lock.

We use MOTUL in our own Championship Winning Turner Motorsport BMW race cars. Shouldn't you?