Improve the reliability of your engine with professional treatment PRO-TEC Radiator Flush. This highly effective formula is designed to completely remove scale deposits, rust, sludge and operational residue from the entire cooling system. Maximum Cleanliness: Dissolves dangerous sludge and releases valves, thermostats and water pumps. Thermal Efficiency: Improves heat exchange, optimizing both engine cooling and cabin heating. Total Protection: Protects metal components from corrosion and extends engine life. Convenience format: 5 liter tank ideal for workshops, fleets or industrial plants. Drain the system, rinse with fresh water and refill with new fluid according to the manufacturer's specifications. ????️ WARRANTY AND RETURN: 30 days for returns. Pre and post sales technical support via.