The Alfine 8 uses grease not oil. The point of the oil bath conversion is to make the Alfine smoother, shift better and (probably) last longer. It is a very noticeable conversion once done.I have had my Zerode since the first run of frames and have not oiled the gearbox. It is sealed in oil. No grit or dirt in , no oil out.
They ran the proto for 2 years of elite level dh and daily runs and never oiled it.