I did a Google search on how to get stains off alumimun, but there were so many solutions....

Anyone on the World site find something that is easy and available to clean the dark stains?

Thanks.

what item or items that are aluminum are you trying to clean?

My new spoiler. I'd like to clean it before I shoot it with clear coat. If I can't then maybe I'll just get it powercoated aluminum color.

Also have another couple of trick pieces that will shortly be added to the car to reduce weight, but need to find a solution to this staining issue.

Well I found a great solution. I painted the damn thing. Actually looks good in silver.

That's the spirit!

Now let's see some pictures.

OK painted:

Click to view attachment