High performance brake and clutch fluid designed to lubricate and protect critical brake system componentry while providing reliable stopping power. Anti-vapor lock formulation maintains responsiveness and performance by fighting both water contamination and vaporization. Advanced chemistry resists corrosion, oxidation and is compatible with SBR, EPDM and natural rubbers. Anti-vapor lock formulation maintains responsive lever and pedal feel. Resists corrosion, oxidation and “boil-off”. Mixes with other DOT 3, DOT 4 and DOT 5.1 brake fluids. For use in all vehicles specifying DOT 5.1 brake fluid. Exceeds the requirements of US FMVSS 116 DOT 5.1, DOT 3 & DOT 4, SAE J1703, SAE J1704 and ISO 4925 (Classes 3, 4 and 5.1).