polished tunnel?

[exman04]

I found a product that I have been using for years now, and it holds up good and looks good with minimal touch ups. But is there anything you can put on polished aluminum thats like a clear coat? Im looking to do something I have never seen done before but think it might need some kind of protection. Any info would help

 

[LoudHandle]

Shark Hide Metal Protectant

http://www.sharkhide.com/sharkhide_metal_protectant.htm

I've never got around to using this stuff, but in other sectors it is spoken quite highly of.