Review on Irontite ThoroFlush: Powerful Automotive System Cleaner (468-9110-16) by Mark Caperton

A product that does what it promises. Use on Duramax Diesel with Copper Leak Protection. I used a conditioner because I noticed a leak from the stopper and noticed the color wasn't fully orange. It was greenish in hue. I was afraid the mixture would turn to mud. I considered using other products but just didn't think they would work. Then I stumbled across it. A gallon dissolved most of the stop leak that was at the bottom of the expansion tank. But some books and nooks and crannies were still there. Used the second bottle, now the tank is clean. I assume that when he cleaned the tank he also cleaned the water jackets, radiator and heater core. A few tips: First, dissolve the powder in hot tap water. This will help to completely dissolve all the crystals. Then pour it into a radiant or expansion tank. You have to pump it through the entire system. Either drive or increase the idle to raise the temperature enough to trip the thermostat. Heating at full power. Once it has reached temperature, start the 12 minute timer. Then drain. If you have a complete failure of Dexcool, you have large chunks, it would be better to drain from a large hose rather than a faucet. If possible, create more speed in the system and really get things going, get the engine running. , the garden hose fills the system and drains the system at the same time. This turbulence created by the water pressure and circulation in the water pump is what pulls most of the bits out of the system. You can then remove and flush the hoses from the heater core.