Hi Laurens,Interesting post and although i am not an engineer as such, now it all makes sense. The BMW unit has a fully supported pinion gear, and the Quaife unit does not. But why would swap the oil in the Quaife unit at regular intervals? After all, when was the last time you changed the oil in a car or a bike unit?
With the amount of 3 wheelers on the road at the moment, and that number growing would it be worth making an exploratory inquiry to BMW. After all they make the engine for the +8 and above!
The manual of BMW says that the oil for this unit doesn't need to be changed. With normal use it can used lifetime with no KM restrictions
