Premium Gasoline in the XJ?

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Apr 6, 2011 | 02:05 PM
  #1  
So my girlfriend just put $30 worth of premium gas into my XJ. Will that harm her?

Thanks guys.
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Apr 6, 2011 | 02:15 PM
  #2  
No, but its a waste of money. Whole thread about it that goes scientifically/mathematiclly/and theoretically in depth.
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Apr 6, 2011 | 02:15 PM
  #3  
Plus thats not very much! lol
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Apr 6, 2011 | 02:29 PM
  #4  
Quote: No, but its a waste of money. Whole thread about it that goes scientifically/mathematiclly/and theoretically in depth.
Thanks and im on my PS3 browser so I can't use the search bar.
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Apr 6, 2011 | 02:31 PM
  #5  
Quote: Plus thats not very much! lol
Aware haha.
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Apr 6, 2011 | 02:42 PM
  #6  
A higher grade of fuel will not harm an engine, it will not help with horsepower, it will not help with mileage. Higher octane just burns slower than the 87 octane, our 8:1 compression engines will never need to burn premium.
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Apr 6, 2011 | 02:54 PM
  #7  
Quote: So my girlfriend just put $30 worth of premium gas into my XJ. Will that harm her?

Thanks guys.
It will only harm "her" if you beat her for wasting money....
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Apr 6, 2011 | 03:23 PM
  #8  
it will burn a little bit hotter but nothing to worry about.
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