No hard and fast rule of 1,3 L for trans. As someone above has defined it with the pic in japanese as 1.3 L if sucked out and 2.1 L if drained out.
Due to this very confusion and lack of info i am against such vehicles. all of the above threads are mere speculations and understanding of what one perceives from the Japanese manuals. Actual specifications are made clear through WORKSHOP MANUALS or company's service centers both of which are not available locally.
What does you so called manuals say about CLUTCH OIL quantity ?
Foe God's sake kindly do not advocate what one not know and confidant of.