Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - anyone using premium gas ?
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Old 11-02-2012, 10:55 AM   #89
red-i
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Quote:
Originally Posted by TboneZX3 View Post
This is why I run 87 octane on long highway trips, but switch to a higher octane when the tank will be used for more city/stop-and-go driving--especially in the summer.
but doesn't the car take a 1-2 full tanks of gas to adjust for the octane change anyway? or is that a load of crap and it's much more dynamic than that?
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