Technically salt in water and that salt-water solution needs to have oxygen too. But this group hates to be technical.Anything made of steel can and will rust, and salt is a great enabler of that.
Maverick hoods won't because they are aluminum, but the steel parts - different story.
Maybe chemical reactions are different in your universe, but I doubt it.
Why do you think cars in the snow belt with salted roads rot before their engines wear out and car bodies out in the desert last for decades... It's the salt, or lack of it.

No oxygen, no rust.
No water, no rust.
Of coarse in real life the three are found together frequently.
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