Zee,

That Honda fill plug was rounding off as well. I used the pipe wrench on the bolt head ... got the jaws locked on to the remaining sholders of the hex and broke it free. It chewed the bolt head up but once it got a bite the harder I torqued on it the stronger the jaws gripped the bolt. It may seem strange to use a plumbing tool for auto work ... but in this case I can't think of anything else on hand that would have done the job. It not only gained a lot of grip on a bad bolt head but at 18" the pipe wrench provided a great deal of leverage ... like a mini-breaker bar. I do hope you get this problem resolved through whatever means. Good Luck.

Zee,

If you can get a large pipe wrench on it ... give it a try. Just had to break a transaxle fill plug loose on my son in laws Honda Civic. Nothing else but the plumbers tool would do it. Once it got a bite on the plug it just wouldn't let go. Must have taken 120 foot pounds to break it free! I replaced the chewed up, rounded off, SOB plug with new. I did put a bit of anti-seize compound on the threads so it shouldn't produce any extened periods of swearing and knuckle busting next time around. Good Luck.

That plug is huge, it's a perfect target for a backout.

just go to your local hardware store and buy a backout set.

you'll use a drill (fast one) in reverse, since the threads on

the backout are the same.. then you can just attach a wrench to

the above mentioned backout and remove the plug.

gee, do you think I could say the word "backout" any more?

... backout, backout, backout. (giggles)

This is not the first time I have read this....one dude had to get the Dremel out...but first:

1) Can you still get a wrench on it? If so, somehow hold the wrench on the haed then ping it with a ball pein hammer....ie smack the wrench to get some vibes going...this will help break the metal to metal "seal" from atom sharing....

2) If a wrench is useless get the old vice grips out....and lock the thing on the head tigher than tight, then ping it, then put a piece of pipe on the screw handle of the vice (hehe) grips and lever away. Careful....

3) Punt...sell the car...replace the tranny...or moto tool!