Maybe it sounds stupid, but what about vinegar? It helps a lot to clean household aluminum. I found it out when I called
https://www.emop.co.uk/new-cross-cleaner and ordered cleaning. Found a nice lady on their website and in 3 hours she came and cleaned amazingly fast and well my garage where I have plenty of instruments, car/bike parts and so on. So she told me she used a little of vinegar and a washing gel (I don't know it's name).