Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - anyone using premium gas ?
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Old 03-02-2012, 09:29 AM   #75
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Location: Farmington, CT
What I Drive: 2013 Tangerine Scream ST

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So, just for ha-ha's, I tried a tank of 93 octane in my SE 5-speed. I must admit there is a difference in the performance of the car, mostly in the ability to keep it in higher gears at lower speeds (which I assume is the knock sensor not triggering). I would surmise that this would result in slightly better gas mileage if driven accordingly. Having said that, probably not worth a $.30 or $.35 differential.
2013 Tangerine Scream ST
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