Thanks guys but I know there was a spray acid I used on my aluminum slotted wheels on my first car wayyyyyyyyyyyyyyyyy too many years ago. It really brightened the aluminum then I would polish it. Something like that would work out just fine, I'm just not sure what the spray was. I really don't want to take the motor anywhere and I don't want to paint it either. Somebody must know what they spray is.
Thanks again.
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