in a diesel you will not see the same blue smoke at startup from bad valve seals, the engine will use that oil as fuel and blow usual black diesel exhaust on starting.

It may sound like a can of marbles when starting up if the oil consumption is really bad.

I would also suggest to stop driving the car, if your engine decides to run away (the engine uses its own lubricating oil as fuel at uncontrolled rpm - imagine 12000 rpm or above) you could land in a dangerous situation whilst driving.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)