Hello, my father has used a heavy oil consumption in his Mercedes (built in 2002, registered for 6 months). In fact, within 6 months the car consumed approx. 2.8 liters of oil on approx. 4800 km. I picked up the car from Mercedes earlier and talked to the master. He said the engines may need up to 0.8 liters per 1000 km. He also said that there is very thin liquid oil in the engine, which is why he consumes more. What do you think? Ouch because they have no idea, or perhaps want to save work? We did not have to pay anything for refilling the oil. Is that normal or does that suggest something?