Focus Fanatics - View Single Post - anyone using premium gas ?
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Old 11-06-2012, 08:17 AM   #102
Focus Addict
Join Date: Nov 2011
Fan#: 91789
Location: Too much info, IL
What I Drive: 2012 SEL White Platinum 5 Dr 302A

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Car stumbles and sags under acceleration with 87 octane. Also stumbles and sags with 93 octane. No measurable difference in fuel economy either, so 87 seems the logical choice for me.
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