I've got mixed feelings about winders. At one time I had three 4 watch winders and kept almost all of my watches on winders. They are handy for non quickset watches (older vintage) that require winding the hands forward 2 revolutions per day to get the date correct. Maybe complications that are a PITA to reset after running down for a few weeks. Other than that, I really can't see the advantage to keeping one wound. I'm down to one working winder, and it has 4 watches being wound, the other 25 or so are in watch boxes and my wrist.
I believe that what you read is pretty controversial, the oils used today are synthetic, and while I have no watchmaking knowledge, from all I've read and heard, the new oils are very stable and don't break down like the old natural oils did. That's not to say that oils last forever, because they don't, but they tend to be pretty stable for quite a few years.
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