100% Synthetic Racing Brake Fluid DOT 4
Very high boiling point: 325C / 617F
For hydraulic actuated brake and clutch systems

TYPE OF USE
For all types of hydraulically actuated brake and clutch systems requiring non-silicone synthetic fluid.Specially designed to withstand the extreme temperature generated by racing carbon and ceramic brakes while allowingminimized air entrance for brake cooling. Also suitable for conventional brakes with steel discs and for conventional hydraulic clutch actuators.Exceeds DOT 3 and DOT 5.1 standards requirements, except for viscosity at -40C / -40F

PERFORMANCES
STANDARDS FMVSS 116 DOT 4
SAE J1703 / J1704

Extreme thermal resistance and stability:
MOTUL RBF 660 FACTORY LINE very high dry boiling point (325C / 617F) exceeds the requirements of the standards DOT 5.1 non silicone base (260C mini / 500F mini) and DOT 4 (230C mini / 446F mini), and therefore enables effective braking even in extreme conditions. Allows better aerodynamic performance by reducing the need for brake cooling air scoops on vehicles.

Efficient when rainy:
MOTUL RBF 660 FACTORY LINE very high wet boiling point (205C / 401F) is superior than the requirements of thestandards DOT 5.1 non-silicone base (180C mini / 356F mini) and DOT 4 (155C mini / 311F mini), and thereforeenables to keep efficient braking in wet conditions. Indeed, DOT 3, DOT 4 or DOT 5.1 brake fluids have the property of absorbing moisture from the air, which reduces their boiling points and increases the risk of vapor lock phenomena. The wet boiling point is measured after moistening the product with 3% water in order to be representative of the state of
the fluid after 1 year of use.

RECOMMENDATIONS
Drain interval: always according to manufacturers recommendations and to be tuned to your own use.Avoid mixing with lower performance polyglycol-based brake fluids. Do not mix with silicone (DOT 5 silicone base) or mineral base fluids (LHM).Store brake fluid in its original container, tightly closed to prevent moisture absorption.Aggressive chemical product if in contact with hands, paint or varnish. If skin contact, rinse thoroughly with water

PROPERTIES
Color Visual Amber
Viscosity at 100C (212F) 2.6 mm/s
Viscosity at -40C (-40F) 1,698.0 mm/s
Dry boiling point 325.0 C / 617.0 F
Wet boiling point 205.0 C / 401.0 F