Recently cleaned some carburetor parts with it. As the booster horns and accelerator pump covers were "aluminum" (well, pot metal/Zamak, anyway) I didn't want to use the high-concentration Purple Power- which was pretty grungy by that point anyway.
I first tried a few squirts of GoJo, but that didn't do crap- I suspect it was even less
effective than just plain water would have been.
Then I went back to the Purple, but a lot weaker than I'd mixed up before. That worked a lot better, but a couple parts still had oily dirt on them that it only softened, not removed. I should have scrubbed those off first, but really, I wanted to see how well it did at cleaning as-supplied parts.
I was thinking I should get some Dawn or other "grease cutting" dish-soap/detergent and give that a try, Might be a bit more effective.
One other bit: I think I'll have to dig up a mesh tea-infuser ball or something, for the smaller parts. I lost one of the pieces out of this coarse-mesh factory basket, but very
luckily found it in the P-trap of the shop sink.