I am sure I could find this out by doing a search, but being basically a lazy person I will just ask here What exactly does whiz mean. Is it any cleaning by a harsh method. Does it include acetone, olive oil, or any other less destructive means of cleaning?
TIA for any answers!

http://www.pcgs.com/articles/article2341.chtml
http://www.bestknows.com/numismatic/whizzing.html

Interesting pages about what whizzing is and how it is done.

"Nose Oil".... interesting sites. Thanks burks

oops, apologies to Linda. I didn't realize this had already been asked today