DOT 4 brake fluid is a high quality brake fluid recommended for use in the hydraulic brake and clutch systems of all cars, commercial vehicles and motorcycles for which a glycol based DOT 3 or DOT 4 fluid is specified. With a higher boiling point than DOT 3 fluid, this fluid is ideally suited for higher performance vehicles where the braking system routinely reaches moderate brake temperatures. EBC DOT 4 is a premium specification brake and clutch fluid recommended for use in the hydraulic brake and clutch systems for all vehicles for which such a non-petroleum based fluid is specified. The only difference between DOT 3 and DOT 4 brake fluids is their purity - DOT 4 simply has less water in it than DOT 3. Perfect for vintage Honda's. Can not be mixed with DOT 5. Dry boiling point: 268 C (514 F) Wet boiling point: 165 C (329 F) 8.8 oz (250mL) bottle