It will damage his car. It will cause premature weaing out of his sparkplugs at the very least. done it before (like a dumbass) so I know what I'm talking about. There is absulutely no point in putting anythignn other than the manufacturer recommended octane into a basically stock vehicle.

 

not worth it like others said

 

thank you, i knew that some one had to agree with me, since i am right!