Hey, I own a 2011 GT in Grabber Blue. Ordered it right before the 5.0 were coming out. It was a present for me from me for my birthday in 2010. Still have not hit 30,000 miles. I know it is harder on them setting than being driven daily. Need to fix that.
The lack of use likely comes from the 'old days' when oil was crude and metal was not as refined as it is today.
The only real time sensitive item would be tires, more better if it is garaged.
JMO and not based on any real scientific evidence.