To separate or not to separate

If the factory rivets were steel, that's what I would use for reassembly. For added protection, use some "no ox" between the steel & aluminum to stop oxidation. Just remember, a little of this product goes a "long" way. Ask me how I know this. LOL
Well you've got me there, I don't know what no ox is and I'll bite, how is it that you know to use it sparingly