Hi to all,,,,
Im new here, but i have the same problems,,
After checking the haynes manual
it states that for the F23 box (fill to the level as normal) then after screwing the level plug back in fill with another half liter oil.
it says its part of a modification.
But im sure some1 here will check this to comfirm.. I hope !!
I would like it comfirmed as im thinking of doing this to see if it help the gear changes.