>>7660994Novus plastic polish can work, but it's an abrasive so it will gently wear a layer of plastic off with enough effort- not much, but work at it too hard and you'll get an indent. Be gentle with it.
Toy Polloi has soaked pieces in brake fluid but you need to submerge the whole piece. I've also had good luck with LA's Totally Awesome, a cleaner found at Dollar Tree, but again, you have to soak the full part for 12 hours. Simple Green is not as strong, while Super Clean is caustic soda and you don't want it on your skin. None of those work well for just small spots or pieces you can't take apart.
