I’m at a blue beacon now they said they would be wasting my money w a citrus wash they said I had to do acid wash
Well, a citrus wash IS actually a mild acid wash, just not as strong. I've worked around metals for a good part of my life. Aluminum oxidation does not really protect the underlying aluminum. With oxidation on aluminum, if the oxidized area gets wet, the water will travel through and the oxidation area will get larger, same as unprotected steel and rust. You can scrape it off, wire brush it off, but if the material isn't protected, then it comes back and gets bigger, eventually creating a hole and weakening the surrounding area.
It really depends on the condition of the material. If it's not really oxidized, in that there is a sort of crusty surface, then a mild aluminum cleaner should do the trick to remove dark streaks and water spots (if that's what they are). WD40 can do wonders. It is a water deterrent (hence WD) and will cause water to run off. It can be bought by the gallon to use in a spray bottle to treat affected areas. Will it cure the problem? No, but it could prolong the need for any extensive repairs
If you do have crusty oxidation, once removed, you'll need to treat the area with an approved coating for aluminum.