Figured it would be best to ask, since it's not just greasing the piston.

Have a MontBlanc 14, was curious if the nib unit collar was considered too lose (shrinkage or otherwise) that it needs to be greased, or if something else needs to be done.

I'm assuming since the ink reservoir lip pushes into the back of the nib unit as the section gets screwed on it probably has enough pressure to the lip to keep it from leaking ink from past there (But course may make it take a lot longer to flush as ink gets trapped around the collar, which to me is only important when changing ink).



Silicone grease is probably the only thing I could use if I needed to, since the ink reservoir needs to be able to rotate around the collar as it screws into the back of the section and pushes the nib unit forward (which is locked into a specific orientation).