Not sure about the percentage of the 3.6 that had the oil consumption issues but check with your dealer. Yes these things use oil there are several threads on here about oil disappearing that is a proven fact.
Welcome to the forum john parkinson,
We're sorry to hear that you are having oil consumption concerns on your SRX, but it's great that you have otherwise enjoyed your vehicle. Your dealership can do an oil consumption test to see if your vehicle is indeed using an abnormal amount of oil. If you need assistance locating a dealership in your area to have this service performed, please let us know. We're happy to help!
Sarah, Cadillac Customer Care