hi all... has anyone ever experienced this product... does it realy works...??? from where in Pakistan can i buy it and for how much...

//youtu.be/http://www.youtube.com/watch?v=3suQy44G_B0&feature=fvw
here is what there website say...
How and Why Does Steel Seal Work?
Steel Seal permanently seals blown head gaskets, warped heads and cracked engine blocks and heads.
Steel Seal creates a permanent seal that will withstand high temperatures and high pressure. The product can be used in both gasoline and diesel engines, and is compatible with all kinds of antifreeze.
Steel Seal is poured into the radiator of a cold engine. Once the engine is started and reaches operating temperature, Steel Seal is distributed through the engine. The product is drawn into the damaged area and seals the crack with a thermo-chemical bonding process.
Other products rely on fillers to do the repair work, but as the pressure rises and falls, during ignition and shut off, the particles lodged in the cracks loosen and fall out. Competing products offer only a temporary solution.
Steel Seal is a unique blend of several chemicals. It’s a clear formula that contains no fibrous materials or particles that could clog engine coolant passages. We don’t rely on floating particles to do the job. Steel Seal relies on chemistry for its strength.
Regardless of the value of an automobile, you now have a practical solution, backed by the best guarantee in the industry. At a fraction of the time and cost of major engine repair, you can take advantage of this scientific breakthrough.