So the title says it all. I've got the motor out, I've got the engine bay cleaned, and I've got plenty of rust spots & bubbles, especially at the firewall where it is penetrated by bolts, screws, or hoses. Now's the time to take care of these, while I have easy access.
I was thinking of hitting all rust spots with a wirebrush in my drill, then using some sort of heavy-duty primer (epoxy?) to stop the rust. I'd like to avoid any topcoats. I don't care what it looks like, since it's underhood. What would you guys suggest?
Some pics below. Cheers!
The engine bay / firewall was covered in an oil slick before I cleaned it:
One of the bolts that holds the fender to the grille. Not much rust yet, but I could see it getting worse. Anything to lube these bolts with during reassembly?