Does anyone run non-ethanol fuel?

I've run Rec 90 in my 2012 F150 6.2L, FXDWG, Jeep with no issues, better mpg actually.

Just filled up my recently purchased 2023 F150 5.0. with Rec 90 yesterday.

Just wondered what other 4 door 5.0 Coyote owners used.

 

I’ve run 91 non oxy in my 23 Powerboost and did not see any noticeable difference from 93 E10.

 

Jeepsters on the JKU forum posted similar results. Someone explained that 93 w/ethanol was about as potent as 90 w/o ethanol.

Been averaging 20.4 mpg in town w/ethanol, will post the Rec 90 results in a few weeks.

Thanks for the reply.

 

I've been curios about that but the only station near that has it wants a buck and a half more for it. Interesting to hear how it works for you.

 

Yeah, it's expensive for sure. Paid $3.79 per gallon yesterday. 🤨

 

Theatrically, adding Eth to any base Gas will increase the fuel total density average.
This requires higher fuel to Air Ratio for correct combustion ratio.
The Ox Sensors detect the extra Oxygen in the Exhaust the Eth adds to the fuel.
The Sensors' signal sent back to the PCM increases fuel injector On time to add the proper amount of fuel injected.
This action also shifts the PCM Long Term Fuel Tables + Richer to maintain the Ratio. The tables will stay for the fuel being used unto the fuel changes.
The richer tables inject larger amounts of fuel as compared to straight basic Gas. Fuel density increase is the loss of fuel mileage, with Eth added.
.
Octane rating is a totally separate quality of fuels and determined by the Additives added.
The base gas as cracked out of crude oil has a lower base Octane rating of its own.
Most of the additives added raise the Octane to whatever level intended.
.
Power of fuel; In terms of BTU content, cracked Gas actually has to highest.
The additives don't add any higher BTU nor does Octane number indicate any "hotter burning fuel".
The power gains from the Octane gain is dependent on engine design and ability to use that Octane >>at time of actual cylinder spark combustion.
The MDS info for the Gas I most often use has no less that 10 additives.
Some are for injector cleaning, Octane adjustment, vaporization control, and other attributes intended for that fuel grade.
Fuels are chemically complex now and not the same from supplier to supplier.
But remember the base stock all comes out of the earth crude.
Seeing accurate difference between Straight gas and 10% Eth requires accurate measuring, the accounting for all the additives involved in both BTU and average Octane used in the same engine. There can be a variation of Ox Sensor response to a change in fuels, as well. Now the A/F Ratio is derived from this Sensors as opposed to many years ago. They are 5 lead and work very different now.
Good luck.

 

All the Rec 90 gas I see around me is 90 octane derived by the MON method. That equates to a R+M/2 that you see on the pump of 10% ethanol gasoline equivalent of 86 octane. So your ECM will retard spark if it senses detonation. Run a higher R+M/2 octane fuel if you want the most power and consequently mileage. Where you fill up from matters too I travel often from the mid Atlantic to southeast states and often see a drop in mileage as I go south. I've had decreases of 20% in some instances so I've learned to avoid certain brands and locations to fill up. A drop like that really hurts if you are towing.

 

I noticed the same thing with 93 non-ethanol from Murphy's in Cape Coral, less mpg than Rec 90 from Marathon, also in CC.

Quit using Murphy in CC.

Thanks for the feedback.

 

I am the opposite i run nothing but E85 $2.35 per gallon.

 

Any issues with that much ethanol? How long before it breaks down?