Motul 600 is an extreme high performance polyglycol brake fluid. It far exceeds the standards of DOT 4. Each bottle is filled with Nitrogen, increasing shelf life and eliminating contamination while factory sealed. Extremely high dry boiling point 594F(312C) helps prevent vapor lock and brake fade during hard use, with excellent recovery time. Wet boiling point 399F(204C). This is a great all around racing brake fluid and a must for anyone with upgraded pads that tracks their car. 

Motul 660 has even a higher dry boiling point of 622F (328C) and a wet boiling point of 399F (204C). For all types of hydraulic brake and clutch actuators requiring non-silicone synthetic fluid. Specially designed to resist extreme temperature generated by racing brakes (carbon and ceramic) only allowing a minimal air entrance for brake cooling. This is even more hardcore and is great for a dedicated track or drift car with full on track pads.