Prestone DOT 3 brake fluid is formulated to provide superior performance in high temperature braking systems found in todays automobiles and trucks. Compatible with all conventional brake fluids. Meets or exceeds DOT 3 and DOT 4 specifications. Substantially reduces the possibility of fluid vaporization and eventual brake failure as a result of vapor lock by maintaining a high wet boiling point. Provides protection against corrosion for all metals within the braking system. Recommended for all ABS, disc, and drum brakes systems as well as hydraulic clutches requiring DOT 3 and DOT 4 fluids. Size 1 quart.