Audi Q7 has a problem of burning engine oil. It was more common in the past and the new model is much better, but it still happens. If it burns engine oil, it is usually caused by a problem with the components inside the engine, such as the wastegate valve that separates oil and gas. It's not thorough, the piston rings are aged and damaged, or there's something wrong with the oil seal. The solution is to overhaul the engine, but it's troublesome, so I didn't do it. Now I just use engine oil to refill it, and I use imported G?T? ?Power? Red? engine oil, the base oil of Category 4 PAO, is of very good quality. Even if the engine oil is burned, there will be no carbon deposits and will not affect the power of the engine.