Posted by Ed M. on February 11, 04 at 11:01:12:
In Reply to: Stubborn rear axle fill plug, 1990 10 bolt rear axle posted by Foy on February 11, 04 at 06:13:15:
If all else fail, I would remove the cover with plug intact, and then drill it out to just under the thread size. Should then be able to collapse the remaining thin wall of the plug. Once removed, clean up the treads and install a new plug.