Originally Posted by Derf00
OP if you are concerned about it, take it in to the dealer. Have them document it. Some gear whine might be ok during the first few hundred miles. If you have them document it NOW and it gets worse then they can document it getting worse (paper trail) and resolve it if needed.
I wouldn't mess with a problem with a brand new car. That's what a warranty is for.
If you go changing the OEM oil and the problem still exists or gets worse, they'll charge you for refilling it with OEM oil and then trying to diagnose the original complaint.
I think I will do this. As part of the deal when I bought the car is that I am getting a brand new GT500 spoiler painted and installed. The owner of my car had a spoiler delete option. I will bring it up before they do the install and maybe a tech can take it for a ride or I can take a tech for a ride and show him. I do want it documented to play it safe. It is just weird that it does it only in that narrow MPH range. Thanks!