Does it have slickness to disallow swirling and scratching?
I'm gonna have to disagree. Dark Fury is caustic and super aggressive. You can get even more cleaning power against brake dust with any of the iron remover types except those won't damage your clear over time or risk damage in the sun etc. Of course, Dark Fury will remove organic contaminants like no one's business, but it's more of a disaster rescue product than something DIYers should use in, my opinion at least.
I don't see how Dark Fury can cause damage to an OEM clearcoated surface unless it was allowed to dry. I have been using it (and similar products) for 15 years without any issues.
Just look at the SDS, it's pretty nasty. It also degrades coatings and sealants with repeat applications. All Superior products are effective but usually with cheaper ingredients and highly potent. The same concerns exist for any very potent alkaline wheel cleaner. I have Infinity Wax Incinerate but almost never use it. It dissolved my sprayers in a week at 1:5 dilution!
I have never seen evidence of protection from sealants and coatings -- they definitely make the surface easier to clean, though.
I mean, for disaster condition wheels sure, go for them. I just don't use wheel acid because most are HF or ABF based and I do not want HF around my house. But even for Porsche, BMW, Corvette level brake dust the iron remover types are super effective and far less harsh. Koch Chemie MWC works better than Dark Fury if you are looking at fresh brake dust tbh.
