Well, I would be concerned about getting large and many aluminub pieces
inside the case when attempting a fix.dI had a 1.9 engine that had the oil
pressure switch hole stripped when the PO overtightened the switch. I tried
a helicoil(first time), and failed. I only made lots of fragments with the
old threads.I would consider leaving the plug alone, and pumping oil out
the fill tube for an oil change.