regular gas in 4.0 XJS?

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Jun 6, 2012 | 03:29 PM
  #1  
Anybody been running regular in a 4.0 XJS? Can water injection be used in a 95-96?

Thanks, Chris
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Jun 6, 2012 | 03:35 PM
  #2  
I run 88 octane since 1998.
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Jun 6, 2012 | 04:27 PM
  #3  
Catbug12,
88 is plus, not regular if I'm correct?
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Jun 6, 2012 | 06:30 PM
  #4  
Quote: I run 88 octane since 1998.
Hmm. That's only 14 years. You sure that's enough of a test period?
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Jun 7, 2012 | 10:37 AM
  #5  
regular gas
No-one ever replied if they had run regular, 87 octane gas!
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Jun 7, 2012 | 10:41 AM
  #6  
One octane point won't make any difference. 'Mid grade' in most places is 89 octane.
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