QUOTE(hollywood @ Sep 13 2009, 06:43 PM)

Anyone use this? How long has anyone used it?
It is suppose to make the engine run cooler (50 degrees) will this help or hurt?
Engineers have designed the engine to run a certain way and temp!!
I wouldnt run it. Ive seen alot testing done with various coolants and straight water. None of them provided and real benefits. they claim temps lower, which is in the cooling system. You would see a lower temp if your reading the coolant temp in the return hose to the radiator. Problem is its misleading, the heat still in the engine but the engine ice is a lower thermal conductor. What this means is it wont conduct the so its basically left in the engine, that why you could see lower temps. The will be radiated out through the head which will actually cause more stress on the valve train. You end up with additional heat in the valve springs, valves, guides, ect ect. this will reduce the valvetrain life.
You actually want the heat to be higher in the cooling system, and exhaust. This way the radiator will remove the heat, also known as heat rejection. This is how the cooling system was designed to work. Also higher exhaust temps will help power. When the temp is up in the head pipe it increases velocity, increases power.