I was told by a Janome tech that all the no oil machines should be run often or the silicone gears will harden. The silicon embedded gears need to stay lubricated and the only way to do that is to run it and not let it sit in a closet for months. If harden then it is sewing with no lubrication until the gears heat up and that is a bad thing. The machine you oil shouldn't be a problem not being used for long periods even decades as you can oil the gears before using.
Last edited by Onebyone; 11-16-2020 at 01:53 PM.