Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - anyone using premium gas ?
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Old 05-13-2012, 05:59 PM   #57
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Originally Posted by I Bleed Ford Blue View Post
The sho DOES NOT require premium fuel, ford just states in the fine print that to get maximum performance that premium is needed. So by using the same type of programming they can take advantage of the higher static compression in the focii.

Follow me now?
Okay - so the SHO has a lower octane requirement, but Ford discloses that higher octane will lead to improved performance? So you're saying that the same may be true for the Focus. Makes sense, except why no fine print stating such?

I don't necessarily disagree with you, but frankly I think any difference in power or mpg is probably pretty negligible, and am inclined to run the recommended 87 octane as long as no knocking or pinging results.
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