Factory R Dot 5.1 is AP Racing’s high performance non silicone based brake and clutch fluid. Recommended for use in the hydraulic brake and clutch systems of all cars, for which a non petroleum based fluid is specified. Suitable for high performance applications including vehicles fitted with ABS and ESP, is suitable for road and track day use. Designation. - Factory R DOT 5.1 ‘Typical’ Boiling Points. - New Dry 269°C