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The Fuel Grade Poll

Which fuel grade you are using?

  • Regular Unleaded

    Votes: 17 13.8%
  • Mid-Grade Unleaded

    Votes: 9 7.3%
  • Premium Unleaded

    Votes: 97 78.9%
  • E85

    Votes: 0 0.0%

  • Total voters
    123
Messages
102
Reactions
35
State
TX
Country
United States
#41
Kia most likely published the power ratings using premium fuel. And will derate with lower octane fuels. I'm also curious with how much of a drop in power with 87 octane?
 
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State
Non-US
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Canada
#42
Kia most likely published the power ratings using premium fuel. And will derate with lower octane fuels. I'm also curious with how much of a drop in power with 87 octane?
This is what I have been harping on about for the last month and peeved that such simple info has not been available. Looks like the mystery is becoming clearer now...but still no official numbers to confirm anything.
 
Messages
102
Reactions
35
State
TX
Country
United States
#43
This is what I have been harping on about for the last month and peeved that such simple info has not been available. Looks like the mystery is becoming clearer now...but still no official numbers to confirm anything.
I hear ya.

Also interesting if rated at 91 octane is there any headroom in the timing maps for additional power gains with 93 octane or higher like with E30 gasoline? This is something that was discovered with Ford's Ecoboost engines.
 
Messages
111
Reactions
6
State
KS
Country
United States
#44
This is what I have been harping on about for the last month and peeved that such simple info has not been available. Looks like the mystery is becoming clearer now...but still no official numbers to confirm anything.
We can make this a community effort by collecting donations for someone to test this out.
 
Messages
130
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16
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#45
We can make this a community effort by collecting donations for someone to test this out.
There is no reliable or accurate testing that any owner could do. Just needs official confirmation from KIA--which octane was used to get the official power numbers; what loss or gain in power occurs when you use the "other" (from the official) octane, either regular or premium?
 
Messages
111
Reactions
6
State
KS
Country
United States
#46
There is no reliable or accurate testing that any owner could do. Just needs official confirmation from KIA--which octane was used to get the official power numbers; what loss or gain in power occurs when you use the "other" (from the official) octane, either regular or premium?
It won't be scientific but it'll at least give us some ideas until something official comes out.
 
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#47
It won't be scientific but it'll at least give us some ideas until something official comes out.
It would be scientific, just not accurate or reliable. Feel free to waste your time.
 

ATXStinger

Active Member
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67
State
TX
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#48
Kia most likely published the power ratings using premium fuel. And will derate with lower octane fuels. I'm also curious with how much of a drop in power with 87 octane?
I'm curious as well, wondering if Kia will provide any more information if they decide to send out notifications.
 

MurlinatoR

Moderator
Staff Member
Messages
1,221
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290
State
IA
Country
United States
#49
I'm curious as well, wondering if Kia will provide any more information if they decide to send out notifications.
Hey boys and girls! I'm going to send a few emails up the Kia o-o-o-o (chain. LOL I kill me...) to see what I can find about this.
 
Messages
449
Reactions
66
State
MO
Country
United States
#50
Hey boys and girls! I'm going to send a few emails up the Kia o-o-o-o (chain. LOL I kill me...) to see what I can find about this.
That would be great, [MENTION=291]MurlinatoR[/MENTION]. If you have an "in" with your service manager, see if he can hook up with an engineer. I was a service manager for about 10 years and I always had an open line to top tech people.
 

KiaFan

Administrator
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Staff Member
Staff Member
Messages
1,011
Reactions
89
City
Columbus
State
AZ
Country
United States
#51
Hey boys and girls! I'm going to send a few emails up the Kia o-o-o-o (chain. LOL I kill me...) to see what I can find about this.
Most excellent.[like]
 
Messages
179
Reactions
15
State
TX
Country
United States
#52
Here you go.


Sent from my SM-G960U using Tapatalk
Just checked my manual and it still shows the original 87 octane even though I purchased my Stinger a few weeks ago.
 
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#53
Just checked my manual and it still shows the original 87 octane even though I purchased my Stinger a few weeks ago.
The language used in the new sticker is unfortunately no clearer than the old language. Any car should use higher octane fuel "for optimum performance."

There is only one fact that matters: what is the Stinger's HP and torque output at 87 octane versus 91 (and maybe 93 as well for those interested). KIA knows the answer to this; they have known it all along, yet are not publishing it and instead issue vague and generic statements and recommendations that could apply to any car.
 
Messages
139
Reactions
40
State
MD
Country
United States
#54
FWIW, I've tested the car one week using 87, the next 93, then back to 87, back to 93 for about 4 weeks now, making sure to get 4he car as close to empty as possible each time.

I haven't noticed any difference in power between the two, although most of my driving is to city driving mot much opportunity to really push sport mode.

What I did find interestingly is that I get around 1.5mpg better per tank using the 87 octane than I do using the 93. In both cases, this is mostly city driving.

Sent from my SM-G965U using Tapatalk
 
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173
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45
State
CA
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#55
Is there a limit to what octane rating is safe, can a car like the Stinger handle a tank full of 100 octane, or higher?


Sent from my iPhone using Tapatalk
 
Messages
350
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33
State
CA
Country
United States
#56
Is there a limit to what octane rating is safe, can a car like the Stinger handle a tank full of 100 octane, or higher?


Sent from my iPhone using Tapatalk
You can go over 100octane if you want to, but it'll be a waste of money.
 

robz32

Moderator
Staff Member
Messages
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528
State
TX
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#58
Because?


Sent from my iPhone using Tapatalk
Because the factory ECU and/or chip are not tuned for that type of fuel. You will not be extracting the max potential or advantages of using that fuel.
 

MurlinatoR

Moderator
Staff Member
Messages
1,221
Reactions
290
State
IA
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#60
Hey boys and girls! I'm going to send a few emails up the Kia o-o-o-o (chain. LOL I kill me...) to see what I can find about this.
Happy Monday everyone! Hope that you all had a very blessed Easter!

Okay, so I got my first response from the engineer's. It looks like the advertised ratings are using RON95 fuel (91 US octane). So, anything higher would theoretically INCREASE ratings.

More when I get it!
 

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