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1997 - 2006 Expedition & Navigator 1997 - 2002 and 2003 - 2006 Ford Expedition and Lincoln Navigator Discussion

Fuel mileage?

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Old Feb 19, 2005 | 01:29 AM
  #31  
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Monsta
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Originally Posted by phastalon
Has anybody tested different octanes to see if there's an improvement by using 91 or 93 octane?
I have. I noticed no difference with either mileage or performance.
 
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Old Feb 19, 2005 | 07:05 AM
  #32  
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1owner
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I've got a '00 EB w/5.4. Went camping last weekend pulling my popup tent trailer [2200#]. I got 15.7 @ 70 mph. This was calculated, the mileage shown by the truck was 15.5. Only thing i have done [other than maintenance] is reprogram the ecm with the Predator.
 
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