Usually bead or soda blast it and clear coat it. I’ve used Eastwood Satin Diamond clear on things like carb bodies etc keeps them from corroding. I assume it is on the engine ? Maybe you can hit it with a scotch rite and clear coat it
did bodies both the carb bodies and valve covers after bead or soda blasting them. Has held up ok for 2-3 years. I suspect if you degrease hit it with scotch brite clear it you will be ok in terms of decent corrosion resistance
