I tried CorrosionX on stainless steel bolts in aluminum rods, some years ago.
These were the set screws on “Locking Bars” of Hurricane Shutters right next to Ocean surf.
I was not impressed after watching for a few weeks, as white powdery corrosion appeared quickly.

CorrosionX seems to have created at least ten times as many special formulas since my test.

I have seen impressive results with

https://www.eezox.com/

on iron type alloys and steel