Check the listing for details. Blue Devil Head Gasket Sealer Pour-N-Go (16oz Bottle). Condition: New. Listed at 57.99 USD. Blue Devil Head Gasket Sealer Pour-N-Go (16oz Bottle). Part # 00209 SKU # 415806 Weight 1.5lbs BlueDevil is now available in a 16 oz pour-n-go size! Permanent repair for leaking head gaskets in both gas and diesel engines. Pour-n-go is designed for your customer who has limited time or is not a serious mechanic. Formulated for smaller engines, no flush or thermostat removal is required. If the radiator or overflow tank is full, drain down the anti-freeze to allow enough space for BlueDevil. Start engine while cold and then turn the heater on max. Slowly pour BlueDevil into the radiator and replace cap. Let idle for 50 minutes at normal operating temperature. Easy to use and provides your customer with a permanent repair! • Easy to use / pour-n-go • Do it yourself formula • Contains no solid or particulate matter that can harm a vehicles engine • No flush or thermostat removal required