From another thread here is another product:

http://www.rustbullet.com/index.htm

Also, don't get it on your hootus...
http://www.explorerforum.com/forums/showthread.php?threadid=18595

Brake fluid does seem to remove POR15 though, I just wouldn't use it on your Hootus.

-Tad

__________________
1995 G320
2003 C230 Kompressor Coupe
2005 ML500
2007 ML350