I have a polished piece that covers the radiator in my 2009 Dodge Charger. Because it is daily driven, it is subject to rain, mist, dew, etc. This, mixed with heat from engine and not always getting right to cleaning it up, I get etched in watermarks on it.
So it's time to pull out Adams metal polish #1 & #2 and get it cleaned it up, and cleaned up and looking great is definitely what it does!
Before:
After: