I can say the gen 2 is similar. With between 89 and 91 you get better mpg, but its not cost effective. If you keep your foot in it and have a cvt, it has more guts so to speak in regards to how it varies the rpms and acceleration.
93 is another story. Many cases you arent getting true 93 and when you fill up it adds to the fuel already there and becomes less than 93 octane. After a few tanks of 93 I started to loose throttle response like on the 87 stuff. I then backed down to 91 octane.
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Originally Posted by Ecky
I'm not entirely clear on this. There are some over on InsightCentral who claim going above AKI 87 yields no benefits in the G1 Insight. I've actually returned better numbers filling up with 87 than with 93, but basically within margin of error.
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