Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - 91 or 93 Octane, which is more common?
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Old 03-01-2011, 04:34 PM   #3
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Originally Posted by BLRich1 View Post
You can always have them make more than one file for you. Around here 91 is the highest I can find but I know when traveling 93 is fairly accessible but if you ever travel and can't find a 93, better safe than sorry. [/poorly structured, run on sentence]
Yeah, that's what I was thinking. I'd hate to end up low on gas on the highway only to find a station that only had 91, with me driving with a 93 tune.
But, the other way, going with a 91 tune and 93 octane wouldn't be as bad. Not going to get the same performance or gas milage, but at least it wouldn't be harmful to the engine.

It pisses me off that this stuff isn't listed on the companies' websites.
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