no no no, you muppet! my mate did this and it smelt for ages.
i work in the motor trade and take it from me if you want to clean aluminum the only thing to use is alloy wheel cleaner.not because its fo alloy wheels but because if you get the right stuff its acid.it strips the surface clean,it really can be quite amazing sometimes.
use strong degreaser first then spray with wheel acid.soak for few mins max then jet wash,hose off and dry thouroughly (they are carbs!)
trust me nothing comes close on bare alloy…ignore all the above posts…
ps try and my it from a motor factor reather than halfords type places.its proper strong and not halfords watered down rubbish…and mind your eyes!! 😯