I decided to clean up my HD Dyna and started with the chrome tire cleaner. I decided what is good for the chrome wheel must be good for the rest of the chrome. I sprayed my engine also, I guess not all the engine was chrome. Maybe it's a brushed aluminium? It's a rougher finish that isn't smooth and shiney like chrome. hmm mabe that should have been a clue! It looks terrible, it is streaked like the chrome cleaner stripped or ate through the aluminium or whatever material the engine is. I then tried the aluminium tire cleaner and it didn't undo what I had done. Have I done non repairable damage? Is there a cleaner I could try?

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