Actually, it is using FEO 10W30 according to the dealer.

As to conditions that cause the oil consumption to rise, its been hard to find much of a correlation, but it was very variable over the test, from about 0.3L/1000 km to 1L/1000km. About the only thing that seemed correlated was the amount of stop start driving i.e. more oil consumption with more stop-start/suburbia driving. That said, correlation does not imply causation