HEY GUYS I'VE GOT A 2.2L S10 95 VINTAGE WITH THE CYLINDER HEAD CASTING OOZING COOLANT EXTERNALLY ABOVE NO 2 AND 3 SPARK PLUGS. ITS ONE THE STYROFOAM LOOKING ALUMINUM HEADS, IT HAS NO VISIBLE CRACKS BUT IS DEFINITELY POROUS. ANY SUGGESTIONS? OR IS IT JUST MY LU... Login to read more.