I think to be safe... smash some rivets on a practice plate.

There's a product called 3812S made by Du Pont. It's fast dry enamel reducer, read the can instructions, it covers using it as a cleaning prep. Removes just about anything, oil, grease, scotchbrite dust, Sharpie marks, ink, lite rust (on ferrous metals). I'd suggest using cotton shop towels, paper d...