They were a PITA when New.
1 of those Red Mothers 'ball things work's well especially the small 1 around the ribbit's,croak....
Mag cleaner is Acidic,wheel cleaner is 'phosphate,Alkaline. About the PH of.Both do the same 'thing as in 'eat at the alum',just different Color at the End of depending on the Magnesium content,which is why you use Mag cleaner on 'Mag's and Wheel cleaner on Alum .
I know, we use Both in the hvac biz.Thing is,Acid will not remove anything but Alum where Alky removes about everything.Dirt,grease,paint in some cases. Depends on the intensity of the Mix.
I use the Alky's to clean Greasy,Dirty,stuff but on straight Alum,use Acid which will etch It out requiring repolishing which brings me to a question of the 'rust' in the pic's?
I have a set of AR wheels which I 'let go' and wet sanded and repolished with Mothers and the 2 Red balls to 'respectable' and you might want to just start with a simple Dawn wash and Mothers really. Mine were schidt and not CC so I had nothing to lose.Yours are Decent and may need a little TLC First.