Mine has never used a drop of oil until now, it has started to do so about 10k ago, and is using about 400/500 ml per 6 or 7000 km. We plan to take it apart at around 200.000km and rebuild it, unless it gets substantially worse.
147 or 149 km. It hasn’t been used much over the last few months. But that’ll change in September and November.
I would expect your engine to last longer than the GS’s, though.