MOTUL RBF 660 is a fully synthetic brake fluid based on polyglycol, specifically for racing. Suitable for all brake systems (steel, ceramic or carbon brake discs), which currently occur in racing. Can also be used in conventional brake and hydraulic clutch systems.

• Mixable with all brake fluids DOT 3, DOT 4 and DOT 5.1 polyglycol, however, not recommended
• Extremely high dry boiling point of 328 ° C in comparison to other products based on silicone or polyglycol
• Allows safe braking even under the most extreme operating conditions
• Very high wet boiling point of 205 ° C in comparison to other products based on silicone or polyglycol
• Allows safe braking even in high humidity or during wet races
• Not mixable with brake fluids based on silicone (DOT 5) as well as special fluids such as LHM
• Fluids may damage the vehicle paint
• OEM Approvals: FMVSS 116 DOT 4, SAE J1703
• Standards: SAE J 1703, ISO 4925, FMVSS 116 DOT 4
• Content: 0.5 Liter

Properties:

• Colour (visual) brownish
• Viscosity at 100°C 2,59 mm²/s
• Viscosity at  -40°C 1698 mm²/s
• Dry boiling point 328°C
• Wet boiling point 204°C