The manual says Premium which is at least 91 octane at the Sunoco station by me, but will using a 93 octane make the driving experience any more fun? Is it good/bad to use 93 octane on a 2012 civic si? How's the mpg on 93 vs 91? Also, any experience or thoughts on higher octane (94+)? I just can't seem to find any good responses on how this car performs or is affected by higher grade fuels vs 91 octane. Thanks in advance for any informal replies!
Bookmarks