[TR] Cleaning alluminum castings

[Allen Hess]

At the auto parts store I bought a spray bottle of aluminum wheel  
cleaner--this IS an ACID--the bottle says not for painted or coated  
wheels. I used it on aluminum wheels and it makes a beautiful color  
and finish, looks like it is fresh out of the mold, but it will again  
oxidize. So, I don't think the carbs are all aluminum and you should  
definitely test if you decide to try it.

Allen