Your instructions were the best I've read in a long time. Thank you for such detailed instructions. I performed the oil change with a perfect score. I just have 1 question that is related. As soon as I finished with the oil change I went refilled the diesel exhaust fluid tanks. (there is one refill port on the RH and another on the LH) the port on the RH (passenger side) was almost full but the one on the LH (drivers side) took 3 liter bottles to fill. Is this normal for 1 side to consume so much more than the other side? This is my first time changing the oil and doing mntc to this car. I just bought it for my wife 5 months ago.