Gas Octane

[GregO]

Kwik Trip is 93 @ 10% and the county my work is in has no ethanol 91 at a few stations.

The 91 no ethanol KT pumps I’ve seen are all geared towards ATV/UTV, Sleds and OPE
It’s a dedicated Off-Road pump but I believe it’s taxed as On-Road.
I’d classify your 2023 Gen3 as high compression. Ask the KT manager which fuel is replenished more often, the fresher the better. My local Costco receives 3 tankers a day, the fuel is so fresh it has the faint sweet aroma of race gas.
(copy & paste from Kwik Trip)
Premium 91:
Premium 91 is a clear gasoline with no ethanol added for power equipment and other small carbureted engines. Its best use is in recreational vehicles, motorcycles, boats and outdoor equipment.

• Preferred use in premium and performance vehicle/engines that require gasoline (Iowa and Wisconsin).
• Recreational use only (Minnesota)

Premium 92/93:
Preferred use in premium and performance vehicles/engines that require gasoline. Premium 92/93 contains up 10% ethanol. It is designed for supercharging/turbocharging vehicles and high compression engines.

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[GregO]

I used to have a station that sold E0 93 close to me. I got 3 to 5 mpg better mileage vs E10. 5 MPG better on the freeway. E0 is all around better fuel.

Fake reformulated gas vs. Real Gasoline.

 

[K4fxd]

Now the only E0 I can get is 87 or race gas at 110

 

[Pws6]

I used to have a station that sold E0 93 close to me. I got 3 to 5 mpg better mileage vs E10. 5 MPG better on the freeway. E0 is all around better fuel.

If referring to gas mileage only maybe, there aren't many other ways that it's better

 

[K4fxd]

If referring to gas mileage only maybe, there aren't many other ways that it's better

It's better base stock. The oil companies use E to enhance inferior fuel. That is why E85 at the pump is SO much cheaper than E85 from a fuel supplier. Same with E enhanced race fuels.

In my logs I get better knock suppression with straight 93 than I do with E-10<93. And my small engines live a long life with straight gas, not so much with E crap.

 

[Pws6]

It's better base stock. The oil companies use E to enhance inferior fuel. That is why E85 at the pump is SO much cheaper than E85 from a fuel supplier. Same with E enhanced race fuels.

In my logs I get better knock suppression with straight 93 than I do with E-10<93. And my small engines live a long life with straight gas, not so much with E crap.

Interesting, I've never even heard of e0 93

 

[K4fxd]

Interesting, I've never even heard of e0 93

I can't find it anymore. Maybe in states like Louisiana it might still be available.

 

[WildHorse]

1. If your worried about milage, you bought the wrong car
2. And here's stupid me upping my game to E30

 

[engineermike]

I can't find it anymore. Maybe in states like Louisiana it might still be available.

A rare few stations in my part of La even have 91 e0. I don’t think the refineries even blend 93 anymore because they get the octane up from 91 to 93 using ethanol. It’s very expensive for them to make 93 e0 so they don’t do it if no one is making them.

 

[Qcman17]

I only run 91, the car is traction limited so running higher nets me nothing useful in the real world.

 

[Pws6]

I can't find it anymore. Maybe in states like Louisiana it might still be available.

Nah, I travel a lot for work, and to Louisiana many times, that would stick out

A rare few stations in my part of La even have 91 e0. I don’t think the refineries even blend 93 anymore because they get the octane up from 91 to 93 using ethanol. It’s very expensive for them to make 93 e0 so they don’t do it if no one is making them.

so sounds like the logs being better with e0 93 was inaccurate at best

 

[K4fxd]

so sounds like the logs being better with e0 93 was inaccurate at best

They are accurate.

 

[junits15]

why would you put an engine 'carcinogen' into your car if you can avoid it with basically no penalthy?

are we pretending that gasoline isn’t a carcinogen? Or that your car is capable of getting cancer?

you’ll get more power on 93

 

[Paul McWhiskey]

are we pretending that gasoline isn’t a carcinogen? Or that your car is capable of getting cancer?

you’ll get more power on 93

I don’t think that there will be any more power. In fact, there will not be. What you get is higher resistance to detonation.

 

[engineermike]

I don’t think that there will be any more power. In fact, there will not be. What you get is higher resistance to detonation.

…which allows more spark timing resulting in more power.

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