Mitsubishi Repair: head gasket, head gasket repair, head gaskets

Question
Does "STEEL SEAL" or "THERMAGASKET" work as a repair for leaking head gaskets.

Answer
Jim,
I would not recommend trying any quick fix for a head gasket repair.  Due to the extreme high temperatures, high pressures, and dynamics of the head between the block (not to mention how critical that seal is for your engine to last), the only real repair would be for the replacement of the head gasket with a new OEM head gasket.
Good luck!