[s-cars] Seized drain plug

[Wayne Dohnal]

What finally worked for me, and others have also reported success with it, 
is hitting the edge of the plug with an air chisle in the proper rotation.

Since then I've used a 6-point box wrench on it. To get it loose I hang the 
wrench on the plug and kick the end of it (car is not raised for this).  It 
takes a pretty firm whack to loosen it but it has had a 100% success rate. 
That "older car" line is a bunch of B.S.  Touching the plug with a 12-point 
wrench is a kiss-of-death for it.

Wayne Dohnal
1994 S4