FUEL OCTANE

  • Tiny
  • kampkos104
  • 2004 Lincoln Navigator
  • V8
  • 4WD
  • automatic
  • 70,000 miles

Lincoln Navigator requires 91 octane. Can middle grade be substituted? 2004 Lincoln Navigator.

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Wednesday, March 2nd, 2011 AT 3:07 AM

1 Reply

  • Tiny
  • Docfixit
  • Expert
  • 18,993 posts

Try it see if it knocks or performance falls off.

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Wednesday, March 2nd, 2011 AT 2:35 PM

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