Super-sealant for radiators. The enhanced composition stops large leaks when other products are not efficient enough. It drains together with the coolant through the hole and polymerizes, forming a strong sealing plug. It efficiently works with all coolants and does not require system flushing. The vessel can be used in the automotive cooling systems with the volume of up to 22 liters. Application: Start and warm up the engine to the operating temperature. Thoroughly shake the bottle, remove the radiator cover and pour the product into it. Start the engine for 10 minutes: during this time, leaks are plugged.