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, and oxidation and is compatible with SBR, EPDM, and natural rubbers. 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). For use in all hydraulic clutch systems and all brake systems specifying DOT 5.1 brake fluids. Do not use in DOT 5 silicone brake systems or mix with silicone-based fluids. Features: - For use in all vehicles specifying DOT 5.1 brake fluid. - Durable and reliable stopping power. - Anti-vapor lock formulation maintains a responsive lever and pedal feel. - Resists corrosion, oxidation, and boil-off. - Mixes with other DOT 3, DOT 4, and DOT 5.1 brake fluids. - Exceeds US FMVSS 116 DOT 5.1, DOT 3 & DOT 4, SAE J1703, J1704 and ISO 4925 (Classes 3, 4 and 5.1).