I cleaned my Aluminum Bellhousing for my 4 speed with Degreaser then with Oven Cleaner. Now it has white spots like Oxidation.
I can clean that with a wire brush and elbow grease but then it comes back, what do I do?

Without some type of protection bare aluminum will oxidize, clean and then clear coat, another option other then paint is having it coated, powder or a ceramic coating

What should I use to Clean the aluminum?
Is there anything I should look for at the parts store?

sandblast it and coat it with Eastwoods Aluma Blast spray paint. Nobody will know its actually painted. Great stuff.

Otherwise, some hardware stores carry a "naval jelly" product that is supposed to clean up oxidation on aluminum. It's usually next to the silicone sealants, etc...

I believe you can use a wheel cleaner from Eagle 1 IIRC?

It is a mag wheel cleaner,works on oxidation,pitting etc.

It causes a chemicle reaction & you do not leave it on too long.

It will darken the aluminum if you leave it on too long.

I used this mag cleaner on my Webber DCOE carbs & it made them look much better than before.




MBHD

I couldn't find any mag wheel cleaner that leaves a protective film. So I just cleaned it with a wire brush and then coated it with Vasoline. Then I let it set in the hot sun. Then I wiped off the excess.

Glass bead to clean and depending on what you are trying to do, it can be cleared, powder coated, or ceramic coated and polished, both powder coating a ceramic coating have a variety of coating colors, ceramic can also be polished, not a high gloss, simular to a set of cermic coated headers. I just usually clean mine up as best possible with some type of degreaser and just paint it gloss black.

I am kinda strapped for cash. The truck is my work truck, since it has been down for maintenance, I have not been working.

I do Demolition of small buildings. The truck has a Granny Low 4 speed. I hook a chain to the building and go to Granny Low.