It’s been 9k miles since the last oil change on my 2006 A8L. The oil is still full and clear. This car doesn’t burn any oil at 82k miles. The synthetic oil seems to hold up very well. I’m preparing all the stuff needed for the next oil change. I’m planning to remove the oil from the dipstick instead of draining it from the bottom of the car. In order to do this, I’m ordering the oil pump from Amazon.