I often see it on the forum and see you reply to others so I learned. I have already purchased the oil for the c7121 movement from the parts manufacturer. After I have tested it, I will talk to you about the situation.
I would imagine decreased amplitude if applied to fourth or escape wheel, but i noticed hardly any difference with the 3rd wheel in most cases so i think thick oil would be the proper lubrication here in most cases. My question is why would Seiko make the distinction between capped and uncapped jewels? Why on the same wheel apply thick oil on the uncapped end and thin oil on the capped end? Is there some rule against applying thick oil to capped jewels that I haven't heard about?
Just noticed that Mark Lovick uses thin oil (Moebius 9010) for the 3rd wheel in his ETA 2824-2 service video (@8:58). This goes against the recommendation of the ETA technical sheet for the 2824-2, but I believe he does so for a reason. If you read this Mark your comment would be appreciated!
While on the topic; what would the effect of using a thick oil be when applied to a pivot where we'd usually apply a thin oil, such as the escape wheel?
Just to update: I got about a tablespoon of shellac flakes from my BHI DLC assessor, and they work great. I just put a tiny chip of it on top of the pallet, heat it until it becomes semi-fluid and spread it to the right places with a sharpened oiler. Then heat a bit more so that it flows out nicely.
I think one tablespoon will fix a lifetime of pallets.. All the other shellacs I have I'll use for cementing workpieces etc.