I would personally consider 0.65L to be a huge and unreasonable loss to evaporation.
I think people watch Project Farm boiling his oil samples on a stove and think that is representative of an engine, which of course it isn't. His vapours are flashing off to atmosphere, which is not what happens in an engine with a particularly well designed and sealed PCV system like the EA113's. Most of the vapours are trapped by the crankcase and the rest is caught by the primary oil separator, and fed back into the sump.
When choosing an oil, look at it's 'Flashpoint' specification. The higher the number, the better in terms of boiling off. Ester base oils are generally the best for that, and mineral oils being the worst.
If an engine isn't leaking it's oil, then it can only be going one way - down the exhaust via the combustion chambers, or weeping past worn out turbo seals.