Oh,boy. You're opening a can of worms here.
Be aware that your car has no knock sensors and therefore no ability to protect itself from detonation.
That being said, I have run 87 in our cars for about 300,000 miles between them with no problems.
I think there is a noticeable DECREASE in power with premium. But that may be my imagination since I know premium burns more slowly.
Just my humble opinion.
YMMV!
