Bear's True Blue Hyper-Flush, the most powerful flush on the market today. This is a great one step process to go before you use our award winning Bear's True Blue Head Gasket Sealer. You do not have to flush 4 or 5 times like most so called watered down flushes, saving you time and money. It will flush out the most stubborn clogs from engines,heater cores, and radiators!! Tryit today!!