On Tue, 12 Sep 2017 20:46:22 +0200, Emanuel Berg
wrote:

When you buy a new chain, sometimes its in
a box and is very well lubed. But sometimes it
comes from a big roll (coil?) and there is what
appears to be but an oily touch. Should you
lube it when you've put it on or is the
"industrial lube" worth preserving?

I think that reading Sheldon Brown's pages might answer a lot of your
questions.
https://www.sheldonbrown.com/chains.html#factory
--
Cheers,

John B.