yeah prem a waste to me... but when it comes to my dirtbike ill press the 91 button because
no dang valleros round here but once u get into cali they are everywhere haha
You won't damage the engine of any normal street vehicle by not using high octane; the only think that would occur is a lack of performance and decrease in fuel economy.
Do you understand what a higher octane rating means? If so you wouldn't make that statement //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
Also look into detonation and pre-ignition while you're researching...