88 octane?

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Rob Wallace

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So the Sheetz stations in my area have started selling 88 octane (E15 blend) fuel. I was wondering if that ethanol rating is safe to be running in our cars with some sort of upgrading to the fuel system? I have a 2012 stock, hopefully going gearhead tuned in the near future
 

Csbbrah

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Should say up to e15 next to what would be the fuel cap. Guys on here run e30 blends on stock fuel system. Totally fine.

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Ehupp01

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From the owners manual. Dont use diesel fuel. lol

Your vehicle is designed to operate on regular unleaded gasoline with a minimum pump (R+M)/2 octane rating of 87.
Some fuel stations, particularly those in high altitude areas, offer fuels posted as regular unleaded gasoline with an octane rating below 87. The use of these fuels could result in engine damage that will not be covered by the vehicle warranty.
For best overall vehicle and engine performance, premium fuel with an octane rating of 91 or higher is recommended. The performance gained by using premium fuel is most noticeable in hot weather as well as other conditions, for example when towing a trailer. See Towing a Trailer.
Do not be concerned if the engine sometimes knocks lightly. However, if the engine knocks heavily while using fuel with the recommended octane rating, contact an authorized dealer to prevent any engine damage.
We recommend Top Tier detergent gasolines, where available to help minimize engine deposits and maintain optimal vehicle and engine performance. For additional information, refer to www.toptiergas.com.
Note: Use of any fuel for which the vehicle was not designed can impair the emission control system, cause loss of vehicle performance, and cause damage to the engine which may not be covered by the vehicle Warranty.

Do not use:
  • Diesel fuel.
  • Fuels containing kerosene or paraffin.
  • Fuel containing more than 15% ethanol or E85 fuel.
  • Fuels containing methanol.
  • Fuels containing metallic-based additives, including manganese-based compounds.
  • Fuels containing the octane booster additive, methylcyclopentadienyl manganese tricarbonyl (MMT).
  • Leaded fuel, using leaded fuel is prohibited by law.
 

SHOdded

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E15 should be fine. Blends above that is where you start needing a tune for the car to run properly. Hence the fair warning in the oeners manual.
 

StealBlueSho

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I run the sheetz 88 blend on my 2018 Fiesta... no issues with it.

The SHO will do fine.


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Sholab1

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So the Sheetz stations in my area have started selling 88 octane (E15 blend) fuel. I was wondering if that ethanol rating is safe to be running in our cars with some sort of upgrading to the fuel system? I have a 2012 stock, hopefully going gearhead tuned in the near future



That's what Sheets in Erie Pa says but when tested its coming out at 79.
One of the companies my son follows in town posted the E15 Blend at 79 octane on Perry Highway just South of I90
across from the casino.
 

b4black

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79 Octane? That doesn't sounds right. I doubt there is a single car that can run fuel that low and I bet they don't even make pump stickers for that. Probably against PA state law as well.

I suspect you are confusing 88 octane E15 with flex fuel. They might have a flex fuel (E85) with 79% ethanol, which is normal.
 
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