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View Poll Results: Which fuel grade you are using?

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  • Regular Unleaded

    22 13.58%
  • Mid-Grade Unleaded

    15 9.26%
  • Premium Unleaded

    125 77.16%
  • E85

    0 0%
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Thread: The Fuel Grade Poll
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  1. #15
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    Quote Originally Posted by mldavis2 View Post
    I'm in the SW corner of Missouri and that's what I get from the major brand stations 87 - 89 - 91.
    Sounds the exact same here. Unless finding a race-fuel station, that's all we've got.

  2. #16
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    Quote Originally Posted by OklaStinger View Post
    91 is what's most common here and is labeled “premium”. We have a few Shell & VP Racing fuel stations around my metro, but none are on my usual routes. So I stick to 91 and so far my car seems to be running great on it.


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    I'm surprise OK has 91 since we get 93 down here in TX.

  3. #17
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    Quote Originally Posted by ATXStinger View Post
    I'm surprise OK has 91 since we get 93 down here in TX.
    Oh I hear ya. I'm surprised by it too.


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  4. #18
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    Quote Originally Posted by KiwiStinger View Post
    Here in NZ the owners manual says to use 91 RON or higher, the other option here being 95 RON, which is 10 cents a litre more (sorry, can't give you Gallons $) I will use 91 for the time being (done 850 km's/ 530 miles so far) May try 95 later, or even alternate tank fills (would that give me 93 ?)
    91 RON is equivalent to 87 octane over in the Americas.

    We know that the car will run fine on 87 octane, but some sources including Kia documents, "recommend" premium, which is 91 or 93 octane (95 RON). Does the NZ manual or info suggest any recommendation for 95 RON?

    I have a simple question that no one has answered so far on this forum or another one: At what octane level is the official advertised HP and torque developed? If it's 87/91 RON, then there is ZERO performance reason to use anything other than regular gas. If the official HP numbers are only developed using premium, then obviously some people will want that.

    Some premium fuels have more additives and cleaners than regular. The car will unlikely develop more power with higher octane, because the engine computer will simply adjust for it. The higher octane could provide higher fuel efficiency, but not likely to the extent that the price gap between regular and premium justifies. At least where I live, the price gap between regular and premium has grown steadily in the past years. This gap varies dramatically from jurisdiction to jurisdiction, too... For a long time it was 10 cents/L as in NZ. Now it is 13, 14, 15 cents at most stations.

    Before Canada switched to metric, premium was always 3 cents per (UK) gallon more than regular. Then, magically, it became 3 cents per litre, which is a 4.5x increase in cost. Then it crept up to 10 cents and stayed there for many years and now is higher as I mentioned.

    For the metric and math challenged Americans, 15 cents per litre is more than 55 cents per US gallon!!!! Where have you ever seen premium 55 cents more than regular in the USA???

  5. #19
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    I've never even considered putting 87 in the car.

  6. #20
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    We only get 92 octane here in HI.
    2018 Micro Blue Kia Stinger GT
    2015 Galaxy Blue Silica STi
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  7. #21
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    I just filled my GTO today, and although we have perhaps the cheapest regular (87) gas in the U.S., the gap between 87 and 91 today was $0.60/gal. So the gap may be based on the base price of regular 87, or the price of 91 may be more nationally based than 87 which is more locally priced. Interesting differences.
    '18 Kia Stinger GT2 AWD 19" HiChroma Red / Black Nappa
    '08 Pontiac G8 GT 6.0L LS96
    '05 Pontiac GTO 6.0L LS2 6-speed Bright Blue metallic / Blue leather
    '00 Pontiac GrandPrix GTP 3.8L (supercharged)
    '96 Pontiac TransAm 5.7L
    '93 Pontiac GrandAm Quad4 HO
    '89 Olds Calais International Quad4 HO
    Anything before that you don't want to know

 

 
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