Old? Yes! Rusty? YES! Beloved? Maybe? How do I take care of these old, rusty lanterns?

Hey smart / experienced Permies who know these things...

I searched for rusty in the forums, and did not find a good match, so maybe we can get a thread going on how to take care of rusty old items?

I got a box of old rusty lanterns. They are beautiful, and old, and definitely rusty.
I want to use these, and [as a total newbie with no experience in this] would like to take good care of them, and prevent further deterioration.
Clean? Restore? Use not-dreadful-chemicals to do whatever-a-wise-person-would-do to befriend each of these?
Advice on taking them apart for cleaning?
Vinegar bath + some steel wool scrub?
Protect with tung oil after clean + dry?
Identify appropriate fuel and learn to use each different one?

Calling all lantern-afficionados to help map out the way forward for these?  
Thanks!

I haven't tried this method yet, but a customer has and swears by it. Molasses for removing rust. Vinegar, muratic acid, electrolysis, have been things I have used in the past.
https://www.bing.com/videos/riverview/relatedvideo?q=molasses+for+removing+rust&mid=3AF14864FBED7920BA0C3AF14864FBED7920BA0C&churl=https%3a%2f%2fwww.youtube.com%2fchannel%2fUCkkj8VTmpWTU431qYX4_Svg&FORM=VIRE

OOOooooOOOOO Robert, that is a really interesting option! Never heard of that - who'da thunk it???
Thank you for posting that. Will try this.  Molasses + water + bucket + time.

Will let you know how it goes in a few weeks!