Well, Heli-coil sells kits to repair spark plug holes, so I imagine they seal up well enough for an oil pan.

Or, you could just drill and tap for a bigger drain plug and use whatever bigger size works, I guess.


1998 Silver Frost SVT Contour born on...8/28/01[/i]
American Iron Shootout Radial Tire 2 Class Champion, Cecil County Dragway April 20, 2002