One thing to remember is that you have ~twice the oil in your car that a typical car has. I am a huge proponent of oil being the life blood of the engine & that it is cheap insurance. That being said 3k miles is on our cars is a bit over kill. Your oil has plenty of life left in it.

My comments above may not apply to a standard Crossfire as I am not sure if they have the same oil capacity as the SRT6.