try this stuff, outside only tho. wear gloves and have a hose and a old stiff paint brush to help remove coating.

remember aluminium is soft, if you have to sand use fine paper, NO WIRE WHEELS

http://www.zorotools.com/g/00060685/k-G2481683?utm_source=google_shopping&utm_medium=cpc&utm_campaign=Google_Shopping_Feed&kw={keyword}&gclid=CKWXtrid4rsCFbA7Mgodb2EAVg

your gonna need a polishing kit
http://www.pjtool.com/aluminum-polishing-kit.aspx?gclid=CJb09qWe4rsCFYlaMgodw2sAbA

but if you know someone with a 1hp buffer and a 8in wheel it will make it a lot easier, rogue works really well
you can have 100 bucks in materials before you start,