What’s a problem with the car for weeks, that I don’t explain it to myself, so I ask for a tip! 7 months ago I bought a car (Volvo V50, petroler 178 tkm) from dealers. It made a good impression and went through the TÜV despite errors in the exhaust system (red light), which was later repaired. A few weeks ago I checked the engine oil level and there was nothing in it! The car behaved quite normal and there was no engine oil indicator!! Immediately 4L 10W40 shook in and drove. Within 2 weeks I had to refill another 5L, although my driving performance is maximum 300km/week. Last week I changed oil and filter, this time with 5W30. Yesterday, exactly one week later and after about 300 km of driving performance there is no oil in the engine! Here are few corner data: – No oil stains on the parking lot – no unusual smoke from the exhaust – car performance is normal – no unusual noise to hear – fuel consumption at just over 10 L/100 km – driving behaviour: I don’t know about 50 of it as a school.