W210 E300 turbo diesel 1999, few times came Minimum Oil Level warning on dashboard, so i think next time when i change motor oil and filter i'll change the oil level sensor at the same time, Work done but same problem continues "Minimum Oil Level warning", so i check the oil level again from the dipstick and it's MAX. I made a test, put engine running at idle, waiting about minute (engine still at idle) and the same message comes again, i let the engine running and check the oil level from the dipstick, guess what ? Yes, it shows that the oil level was in MIN while the engine running at idle. So, the oil level sensor was right. Question: is there a block in some oil returning channel or why/where it "hides" that oil. I know there is some amount oil circulating in the engine while it runs, but it should'nt be that much ? Between MIN and MAX the oil capacity is about 1,5-2 litres. The amount of oil when changing it is 7,5 litres.