I wrote ‘not oiled’ because the package came with a syringe with oil to apply. I did not apply it. I do not know whether the drive is already oiled at the factory, probably yes.
The package also contains 3 A4 sheets with instructions in English, and an Asian language written left-to-right. They are titled ‘Installation’, ‘Caution: Before assembly’ and ‘Maintenance’. In the Maintenance sheet there is an instruction called ‘Lubrication’ with a photo how to use the syringe. I did not use it.