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| Scion FR-S / Toyota 86 GT86 General Forum The place to start for the Scion FR-S / Toyota 86 | GT86 |
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08-24-2020, 04:15 PM
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#29 | |
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I don’t think you will notice a big difference, but your car might feel like it has a little more zip. It would be interesting to see dyno result differences between 91 and 93. It’s probably just a few HP difference. I always try to fill 93 octane just to be safe, and we get some really hot temperatures here, so knock resistance is important. The DI fuel pump also seems to like better fuel. Sent from my iPhone using Tapatalk |
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08-24-2020, 04:19 PM
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08-24-2020, 04:21 PM
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08-24-2020, 08:54 PM
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#32 |
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I noticed tip in knock when I ran a tank of shell 91 after running 94 for a year straight. Hot day on a downshift going into a corner.
Probably wouldn't be an issue if you constantly ran 91, but the engine is happiest with the recommended octane. I've tossed 91 in the tank when I made a trip and will burn the entire tank while on cruise control. Didn't notice much of any difference in fuel economy in that situation. The differences In cost is negligible, it's more a PITA needing to know what stations offer it. This thread covers it pretty well https://www.ft86club.com/forums/showthread.php?t=70729 |
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| The Following User Says Thank You to RToyo86 For This Useful Post: | JesseG (08-25-2020) |
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