A big wrench.  You may need to re-tap it when you are done.

Pete
peterz@gte.net
8..5 Vanagon

----- Original Message -----
From: TWessner <twessner@CABLEREGINA.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, February 06, 1999 6:28 AM
Subject: O2 Sensor

>Hi Guys!
>
>I'm in the process of changing my O2 sensor on my 84 Westy.  The old sensor
>seems to have become severely corroded and I'm having a heck of a time
>getting it to come loose.  Any suggestions other than massive doses of
>WD-40?  Any tips would be much appreciated.
>
>Thanks,
>
>Trent Wessner
>Saskatchewan, Canada
>twessner@cableregina.com