Evening, I went to the car of my night-beavers earlier. Problem was that the spark plugs had probably already 60,000 down and there was no oil to be seen on the oil stick. So spark plugs out, 2 of them were completely gone (outside poles vebrannt), so he suddenly only ran on 2 cylinders and the other 4 still well worn. ALso 6 new spark plugs pure, oil filter changed, old oil sucked away I had no way to, so new oil refilled about 2.5 liters ;-). Is that normal, or was there really only so little oil in the engine? After that, I replenished and started oil to Max. The engine runs, but in my opinion with too little compression on the one cylinder. Is running restless and no mountain out of the way up. Can this now be due to too much oil in the engine (although only max on the bar), or is the cylinder head seal or piston ring burned and leaked due to the very low oil level? Could much I only got the car with push-on from the underground garage entrance, realz. LG