Never again! My wife took her new Traverse in to the dealer for it's first oil change. She came home with oil smoke rolling out if the exhaust. Pulled the dipstick and the overfilled by 6 quarts! Yes, that's right, they double filled it. It was darn near coming out of the dipstick tube! Had them send a wrecker to pick it up, they wanted her to drive it back and I threw a fit. After rectifying the problem, I asked them for a service ticket saying that they had overfilled in case there were catalytic convertor problems, or seal issues, later in life. They did, but left out the fact of it being overfilled by 6 quarts. Again, I had to get ugly to get what I wanted. They failed to see the difference between it being overfilled by a quart vs 6 quarts. Like I said... Never AGAIN!