Hello friends, To all first information about the vehicle: BMW F01 LCI 730D / 258 HP / 2012 For a short time ( some months ), my transmission is not so clean anymore. You notice the switching processes Strong and my body moves forward and back with every switching process. The car has currently 146,000 KM and is filled with gapless checkbook. After the transmission has started to switch so hard, we have replaced the transmission ÖL with filter from ZF, have driven 500 KM and have it again s amt filter changed. So that it gets really clean, because I am not a fan of gear flushes. After a long search, you could not determine exactly what it is. Was with the gear specialist, but he could not really help me and only adapted the values to me. Turned briefly OK and then again bad. Then I stood a few days ago at the traffic light (red ) and when it became green and I pressed on the accelerator, it really banged in the car. So really such a bang , that I thought someone was in the back of me, but I was alone at the traffic light. But then the car drove on quite normally. Couple of minutes later a very noticeable noise occurred as soon as the speed goes up. I loaded a video of the noise to it immediately with. I packed the car in the workshop on the lifting platform and determined the noise comes from the area between the engine and transmission. We wondered if it was with the bad switching of the gear it could be connected as well as with the bang and pondered whether it could be the converter who got you. Maybe there is someone here who has experienced this noise before and what can say about it. Here some more information, which might be relevant ( previous history ) In the summer of 2021, the turbocharger started to suck ÖL at about 138,000 KM and threw 2 liters in de particle filters. Immediately had turbochargers removed, particle filters also. Both general overhauls. Both velvet new seals installed again, then everything ran for a short time. After a few kilometers, the car stuttered at a constant speed of 70-80KMh. Determining: AGR valve broken. Expanded, original ordered from BMW, had it installed. ( Meisterwerkstatt did everything, not myself). Now the car ran well again. But then the engine started to stink after soot. The workshop said that it could be that the smell also comes from the turbo, since it also according to nem A We can stink for a while?! Almost 5,000 KM so continued, smell still there again Back to the workshop, suction bridge fully rusted, clogged. Directly new ordered, replaced. Car picked up, drove out, no 10 KM, smells it after burnt oil. The next day again to the workshop, valve cover seal loses ÖL and drips it on the exhaust. Valve cover seal replaced. While the lid had been dismantled, one could find that the ÖL in the engine totally muddys Although it wasn’t long ago that it was changed, especially after the turbocharger was removed and installed. Thus Liqui Moly used engine flushing and in the stand rinsed and changed again. Car 150 KM driven, while the ÖL indicator was observed. ÖL became less, engine stinks again after ÖL. Again to the workshop, seals of the ÖL filter housing lose ÖL, thus also replaced. So, now it finally loses no ÖL more. but for that it did on the same day, when I made it out of the factory I would be very grateful if you could say something about it. Thank you very much.