Super Tech Dot 4 Brake Fluid, 12 fl. oz. is a premium, synthetic brake fluid that contains special ingredients to guard against vapor lock and moisture absorption. Super Tech DOT 4 Brake Fluid exceeds requirements for DOT 3 and DOT 4 brake fluids. Super Tech Dot 4 Brake Fluid is specially formulated for DOT 4 brake fluid applications and designed for use in disc, drum, and ABS brake systems.