Ford Focus Forum, Ford Focus ST Forum - View Single Post - anyone using premium gas ?
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Old 05-13-2012, 05:50 PM   #49
Bimmer-Bob
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Quote:
Originally Posted by Power Surge View Post
The way I read that verbage in the manual, is that it means in areas where regular is considered lower than 87 octane, to use fuels labeled premium for better performance (especially in high altitude areas).
Huh - that's an interesting take, and I actually sort of think I agree with you.

At first I thought it was pretty clear that it meant simply what it said, but in context it seems to be saying that premium fuel will give better performance than sub-87 octane fuel labelled as Regular, not better performance in general.

But hey, I think people should put in whatever fuel makes them happy. My BMW asks for 91, so that's what I use (actually I use 93 because I can't find 91 here). I think when I get the Focus I'll use 87, because IMO that's what it seems to be asking for.
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