You are probably the only one who is trying to fill by using the sight glass. The usual method is to drain then refill with 900ml of oil. If your funnel is too far into the gearbox, flow with be restricted by the gears.
I use a clear bottle prefilled with 900ml and squeeze it until the bottle is empty. The filling process is slow, but it goes OK.
__________________
2011 EC250E
|