Owner's Manual
Page 275
... GM Standard GM4718M. This symbol indicates that the oil has been certified by your warranty. • SAE 5W-30 As shown in the viscosity chart, SAE 5W-30 is filled at the factory with a Mobil 1® synthetic oil, which meets all synthetic oils will meet this on an oil...
... GM Standard GM4718M. This symbol indicates that the oil has been certified by your warranty. • SAE 5W-30 As shown in the viscosity chart, SAE 5W-30 is filled at the factory with a Mobil 1® synthetic oil, which meets all synthetic oils will meet this on an oil...