|
If mpg is your main goal, stick with 87. I have found that using premium the mileage does go up slightly(about 5%) but since the cost difference is 10% or more, it is not worth it for that.
If performance is what you want then YES, use 91 or 93 Octane, remember it will take about 100 miles(I read that somewhere) for the computer to reset for the higher octane.
|