66 Dart GT HT Whatsitgonnabe?
I bought a 5 liter jug of "Super de-greaser" meant for car exterior care, like a pre-wash. I soaked the parts in that for an hour or more. It didn't make the crud just rinse off but a little brushing with a light steel brush took most of it.
To get the oxides off I tried the wire wheel and that gave it such a good finish that I ended up using that over the whole thing. I was worried at first that it would eat up the material but it just cleaned it up and gave it a great shine.
I'll say it again: I love my wire wheel.