How can I remove these stains?

How do i remove these stains off my roof rack?

 

What kind of finish is on the rack? Is it powdercoated or painted?

 

nice rack

 

Do the pictures show?

 

It is

anodized aluminum i believe ​

 

http://i767.photobucket.com/albums/xx315/shanky14/20120108_151755.jpg

 

http://i767.photobucket.com/albums/xx315/shanky14/20120108_151815.jpg

 

Wash, dry, light polish (I use PO85RD, but anything will work). Mine look like that after road trips too.

 

Looks like an 08+ Suby rack. I believe that it's aluminum. If so, then I would wash and use some metal polish. Looks like water spots. Or polish with compound.

 

Someone told me try clay bar I did wash it with soap and nothing happened its a 11 Gti rack

 

Try some metal polish with 0000 steel wool. If that doesn't get them off, then have them painted and seal them up with wax!

 

So should i try clay bar too? :shrug:

 

You said you tried the clay bar already, didn't you?

 

No I didn't I only washed them

 

Clay it and get a mf with some metal polish and you'll be done

 

I would agree wash, light polish, seal.

 

What would be a light polish? and do i apply by hand?