@ibmike
Seems like the familiar "quasi-dry sump" system to me, albeit with a magnesium oil sump instead of conventional materials construction.
Quote:
BMW PRESS RELEASE:
The low-weight magnesium oil sump, for example, features a special cover to limit movement of the oil under the effects of strong dynamic lateral acceleration. Under extreme longitudinal acceleration and deceleration, an oil extraction pump and a sophisticated oil return system situated close to the turbocharger likewise help to maintain uninterrupted oil circulation. Oil is therefore supplied continuously to all engine components in all driving situations – whether in everyday motoring or during hard driving on the track.
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