We use oven cleaner on our wheels to remove the dirt out of the rough cast surfaces and smooth surfaces, really cleans the deep fine dirt/dust out of the micro pits.
We use it to clean our R/C motors when they get real dark tar(cooked oil from fuel) on them, they look like new when we're done.
Don't get it on paint.
Our club gets it by 30 gal drum when the club needs more!

Pat