Motorex Brake Fluid DOT 5.1 Motorex Brake Fluid DOT 5.1 is a brake fluid for hydraulic brake and clutch systems with a boiling point of at least 260 ?C and an extremely high wet boiling point of at least 180 ?C. Because of the low viscosity at low temperatures, particularly suitable for additional systems, such as ABS and ASR.Increased wet boiling point. Increases safety reserve against vapour lock. Suitable for ABS, ASR and ESP. Ensures optimum brake performance and excellent response behaviour. 250ml Bottle.