Quote:
Originally Posted by AllShowNoGo
lol ok u keep using regular octane gas in your Si 
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Are all of your posts this infused with intelligence?
Quote:
Originally Posted by its_errick
HAHAHAHAHAHA FUNNY THING! if you look in the fuel door... hm most cars say recommended premium fuel but in our cars (Si ONLY) says PREMIUM FUEL ONLY <= ONLY O.N.L.Y.
but im not saying the car wont run. haha
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It also says in the owners manual to change out the motor oil every 5k miles with 5w-30 and to have Honda do all of the servicing.

What would you do if you ran out of gas out in the middle of nowhere and the closest gas station only had regular?
Quote:
Originally Posted by OrdnanceMarine
Maybe I'm wrong, but the everywhere I look the Si says "Premium Required" and the MDX says "Premium Recommended". "Required" generally means just that while "recommended" means you just take a few lbf*ft hit because the engine cannot advance ignition to the optimal point.
Use 87 if you're stuck with no alternative and drive it easy, then immediately go back to 91 or higher as soon as possible. That should really be the end of this discussion.
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You may be right about the "recommended" and "required" part. However, I don't know if too much thought was put behind the phrasing from Honda. IIRC, the Legends also had "Premium Only", as did the GSR's. I know plenty of friends from back then that used regular in both of those cars. My ITR also saw a couple of tanks of regular and saw no ill effects. I never experienced knocking/pinging.
But let me be clear in saying that I never did endorse using just regular. The difference between regular and premium comes out to a couple hundred dollars per year. Not a big deal. So, yes, USE PREMIUM. If people would read the whole thread and put people's remarks in context, they'd see I was merely referring back to the other poster's comment between "regular" and 87 octane. Nothing more.