I've talked to Ford service about brake dust on my 07 F-150 been told it's normal. It has 37K miles and I decided to change the brake pads to minimize it. When I removed the wheels I found this on the inside.

So I cleaned it with a bunch of different cleaners and ended up with this.

It seems the dust has corroded spots into the aluminum. I even used a scotchbright pad in a couple spots with no luck.
Does anyone have any ideas on how to help this?

So I cleaned it with a bunch of different cleaners and ended up with this.

It seems the dust has corroded spots into the aluminum. I even used a scotchbright pad in a couple spots with no luck.
Does anyone have any ideas on how to help this?
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