No, it's the high mileage stuff. The full synthetic was $1.50 more. I was in a cheap mood that day.The ST full synthetic and the HM version are robust DEXOS certified oils. It is my standard oil change package oil and I use a lot of it.
Verify you are using the FULL synthetic version and not the standard HM oil. I would use the FULL syn in your camaro it is about $15 a jug.