Quote:
Originally Posted by MmmHamSandwich
2006-2011 Si. These are the years featuring the K20.
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Okay, I was just checking since you didn't mention K20 or the last gen Civic.
Quote:
Originally Posted by WolfpackS2k
[NO]
Sorry that's not how it works. This engine was designed for 91 octane so it will make it's advertised horsepower with that fuel. Perhaps it "could" make more on 93 octane, but only if it is tuned specifically for it. And it's not.
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Did you read the owner's manual? Page 74.
Quote:
Fuel types
Unleaded gasoline (93 AKI [Research Octane Number 98] or higher)
If unleaded gasoline with an octane rating of 93 AKI (98 RON) is not avail-
able, unleaded gasoline with an octane rating of 91 AKI (95 RON) may be
used with no detriment to engine durability or driveability.
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It's safe to run 91 AKI but the recommended fuel is in fact 93 AKI(98RON).