John I would recommend using commercial glass polish like that used by glass companies and auto window repair people. You can use a drill with a buffing pad to ease the labor that is required. The commercial stuff won't leave a haze of fine scratches that others might. Some significant scratch damage such as that from a broken wiper can be eliminated with it also. I feel that comet is too aggressive to use with foam buffing pad. Bon Ami is probably okay. I suspect that you will want to do the entire window and others because they absolutely sparkle when completed. Minnesota Marshall Red G, 27 & 28 Dodge Brothers. To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/