Motul brake fluid RBF 660 Factory Line DOT 4 
 
 Motul brake fluid RBF Factory Line DOT 4 is a fully synthetic brake fluid based on polyglycol, especially for racing. Suitable for all brake systems (steel, ceramic or carbon brake discs) that are currently used in racing. Can also be used in conventional brake and hydraulic clutch systems. 
 
 Outperforms conventional brake fluids on polyglycol (DOT 3, DOT 4, DOT 5.1) 
 
 
 Specifications / Approvals: 
 
 Specifications: SAE J 1703, ISO 4925, FMVSS 116 DOT 4 
 Approvals: FMVSS 116 DOT 4; SAE J1703 
 
 
 Advantages: 
 
 - Can be mixed with all brake fluids DOT 3, DOT 4 and DOT 5.1 based on polyglycol, but not recommended, 
 - Extremely high dry boiling point of 328 ° C compared 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 compared to other products based on silicone or polyglycol allows safe braking even in high humidity or rainy races 
 - Brakes are subject to very high thermal loads under racing conditions, which is why the Motul RBF 660 should be checked at least after every 2nd race and replaced if necessary 
 - Brake fluid absorbs moisture from the ambient air. This will reduce the boiling point. For this reason, Motul RBF 660 should only be kept carefully closed in the original container under constant climatic conditions 
 
 
 Warning: 
 
 Not miscible with silicone-based brake fluids (DOT 5) and special fluids such as LHM. Liquids can attack the paintwork of the vehicle. 
 
 
 Properties: 
 
 Dry boiling point: 328 ° C 
 Wet boiling point: 205 ° C