The Traverse makes no mention of Dexos, probably since Dexos was 2011 and it's a 2010 model. I've heard the 3.6 DI has a history of stretched timing chains and tends to be hard on oil. Figured I'll go with a Dexos-approved oil like Mobil 1 or Valvoline Synpower, even though it doesn't require it. Did anything change significantly when they started calling for Dexos? Mine supposedly has the updated OLM programming.