Was on the Sunday on the way home like my Omega suddenly after 30km no more gas had accepted. There came smoke from the oil cover and at the air filter box. He was then dragged to the workshop and the turbocharger looked, but this should be ok. But he probably could also have let oil through. What could he have had? A buddy said a crack in the piston, had had had them with the BMW of the series more often. No engine lights went on or so and he can also start. Had to drive by train to home and let the Omega stand there.