Quote:
Originally Posted by lewdog
When I was daily driving my Mustang I used 89 fuel.
Now that I am driving it seldom, I don't mind paying more for a fill up. But would using a higher octane gas benefit me if the car isn't tuned for it? I've heard people say that but not sure I'd agree? Seems like 91 is about as high as it goes for most pumps here though.
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If your car isnt tuned for it it will do nothing except cost you extra money.