I wonder if clear coating the aluminum would work. I clear coated my billet aluminum on an old classic car I had and it worked great.

 

You could use some Mothers Aluminum polish and then what I used after that was a product from Starbrite, Aluminum Polish , it's in a blue bottle. Gives real good protection and doesn't wear off as quick as other waxes. And it's made for aluminum boats. Good chit.

 

Not that it really matters but technically its not tarnish it oxidation

 

Use both Mothers and Never Dull.
Prefer Mothers for aluminum.
Any protective coating was long gone on my aluminum before I got the bike. On aluminum i've used a dremel to buff some of the stubborn spots -being very careful to feather in and out to not leave a low area.
(someday I'll get a compressor and buffer and do it the right way)
Was going to get a new chrome triple, but got good shine on the aluminum although it is going to require maintenance.

Had been told to keep in mind that chrome gets cleaned while aluminum gets polished.
Had also been advised against using fine wire wool as it can leave tiny bits behind that are prone to rust.
True or not, I don't know...

 

This stuff never fails, works great on oxidized boat parts that have been sitting in the salt air...

http://www.flitz.com/

 

+2 on the Happich simichrome, works friggin awesome on Aluminum.

 

Use 0000 steel wool saturated with Mothers alum polish, follow with Semi-chome applied with a soft cloth. Will shine like chrome.

 

Bad thing I've seen is once the aluminum becomes oxidized, it comes back easier and faster causing you to have to keep up with it even more. Best this is to coat the aluminum well before putting her up for a long spell.

 

Get a Mothers Powerball or Powercone and use a cordless drill. Choose what ever polish/cleaner you like and let the powerball/cone do the work.....Great time saver.

 

Thx everyone for the suggestions, i had already used the simichrome without much success but the nevr-dull has helped alot, cleaned about 85% of the oxidation so i can live with he rest.