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Old 10-08-2008, 12:42 PM   #18 (permalink)
Ford Man
Master EcoModder
Join Date: Jul 2008
Location: Russellville, KY
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I used a tank of 91 octane in my '88 Escort that calls of 87 a few weeks ago because I couldn't get the 87. My driving habits and routes are about the same day in and day out and I didn't see any FE benefit although I could tell the car had more power.

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