Tonight I tried the Wizard brand aluminum cleaner/polish, Arm & Hammer Extreme Whitening tooth paste and came nowhere close to bare aluminum. I also tried a kitchen cleaner for stainless steel etc. Hub is still stained and oxidized. I used a couple of different Dremel bits: nylon brush and a 1/2" super compacted felt bit. Nylon brush held up awesome and produced better results. The latter whittled next to nothing eventually. I need some stronger chemical to cut through the crud and I'm not spending more than the hub is worth on marine aluminum restorers.
Here's the bits I used: