@HarleyT made a good point in Post #25, but I won't quote him as it just goes to his head.
I clean / degrease many chains before sharpening, as described in the threads below. This tends to remove
all lubrication, but is necessary due to the condition of
some chains I receive (they look like they are covered in asphalt). After sharpening, I re-lubricate with a heavy coat of WD-40 to penetrate through the rivet holes, and to eliminate any moisture before storage (discourage rusting).
Some chains I get are rusted, and need to be de-rusted (details in the salvage chain thread).
But
some chains I receive
feel rusted, and are really locked up due to dried up grease/oil around the rivets. After cleaning I need to drizzle on a thin oil (like 3-In-One), and work the links back and forth to free them.
It helps to understand that the middle part of each rivet is hardened and acts like a bearing; it is critical that oil gets in there, as well as between the plates. So if it is really 'dry', I still want a thin, carrier oil to penetrate first, before lubing or soaking the chain in thick, sticky, bar and chain oil. I would choose a thinner machine oil for storage.
View attachment 674716(Tri-Link image)
Again, more details in these threads:
https://www.arboristsite.com/community/threads/philbert-meets-the-stihl-rs3.202969/
https://www.arboristsite.com/community/threads/philberts-chain-salvage-challenge.245369/
Philbert