My first tank of e85, wow

[Graygoose2021]

I bet its due to EPA mileage standards....always pushing for more mileage.

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[ttnuagmada]

I bet its due to EPA mileage standards....always pushing for more mileage.

So in other words, the truck probably does use it, they just can't claim it?

 

[brfertig]

So in other words, the truck probably does use it, they just can't claim it?

all trucks have to be ethanol compatible because all pumps have e10 now. I imagine that the capability will be in the software but may need to be enabled with forscan. Its just dumb because few will take the time to find that info and even fewer people will use E85. I only have two pumps in my area with that and its getting harder to find e85 than it did 10 years ago.

 

[ttnuagmada]

all trucks have to be ethanol compatible because all pumps have e10 now. I imagine that the capability will be in the software but may need to be enabled with forscan. Its just dumb because few will take the time to find that info and even fewer people will use E85. I only have two pumps in my area with that and its getting harder to find e85 than it did 10 years ago.

I mean if it has to be able to sense and adjust based on composition/octane already, I doubt anything has to be changed. Will be interesting to see.

 

[Gros Ventre]

Watch the prices. In Rock Springs, WY, there are two Kum & Go stations that sell E-85. One has a price a dime below 85 octane regular, the other typically is about 80¢/gal below 85 octane regular.

 

[Bossharp]

When I first started researching the 2024 5.0 E-85 cost savings was the main reason most used it. But around me in Florida few stations have it that I noticed. Most don't have 93 either. 91 octane seems to be the highest most commonly available. Since I really don't drive a lot of miles in the last year or two right now I figure I'll seek out 93 if I can find it and possibly get a 91-93 tune to take advantage of it. If that satisfys the fun factor great but there's always a supercharger if I "Feel the Need for Speed"..

 

[brfertig]

I mean if it has to be able to sense and adjust based on composition/octane already, I doubt anything has to be changed. Will be interesting to see.

Our trucks require a fill up sequence. That means when you open the gas door. The truck senses that and does a recalcuation based on fuel put in the truck. This stops fuel trims and dials in the fuel burn back to stoich. This process requires the PCM to do this at every fill up. If that ability is not on in forscan you can damage your engine.

 

[Murrk847]

Can someone give me a TL : DR on e85? I thought it was just cheap gas at the cost of shittier mpg. How does it impact the longevity of my engine? I can care less about "performance." Ive only ever done 87.

 

[ttnuagmada]

Can someone give me a TL : DR on e85? I thought it was just cheap gas at the cost of shittier mpg. How does it impact the longevity of my engine? I can care less about "performance." Ive only ever done 87.

It also has a 100+ octane rating which means more power potential.

 

[KingDavid]

Can someone give me a TL : DR on e85? I thought it was just cheap gas at the cost of shittier mpg. How does it impact the longevity of my engine? I can care less about "performance." Ive only ever done 87.

Since you couldn't care less about performance and responsiveness, then it isn't for you. But our trucks run best on e85. The cheap cost usually offsets the dip in mpg.

 

[KingDavid]

Maybe I'm just cynical, but a dealer confirming it doesn't mean just a whole lot. Dealer is probably just cya since there seems to be confusion.

There's no yellow sticker on the fuel door and the owners manual in the 24 5.0s don't mention e85 as it once did.

 

[diambo4life]

Can someone give me a TL : DR on e85? I thought it was just cheap gas at the cost of shittier mpg. How does it impact the longevity of my engine? I can care less about "performance." Ive only ever done 87.

From my experience, E85 leaves a very "clean" engine internally. You don't have your usual gum and coked oil deposits. That being said, your truck will have worse gas mileage and you need to double or even triple your oil change frequency simply because the oil dilution is higher. E85 by its nature is hygroscopic, so it will attract moisture from the atmosphere but this is only a problem in an open fuel system which these trucks don't have anyway. That been said, it will make a little more power than regular 87 especially when tuned since it is a higher octane fuel. You would have to weigh these benefits/drawbacks for your own application. In your case, I see no reason to run it. For people like me with forced induction trucks, it is a BLESSING!

FYI...you could run 1/2 and 1/2 or even a 1:2 or 1: 3 ratio of E85 to gasoline and create your own EXX blend and get most of the benefit of E85 without it's major disadvantages. Great thing abut the flex fuel truck, it will automatically adjust the tune for ya.

 

[reatt]

A little late, but 2024 owners manual at page 253 says not to use E85 fuel. Actually, it says not to use fuel with more than 15% ethanol. Not supposed to use diesel either. Who would have known?

 

[jcru1017]

I'm debating making the switch. My 5.0 is regeared to 4.88s and 37s. Gas in LA area is $5 for 91 and $3 for e85. Does anyone have any regrets? Tips or information to consider? To me, $2 a gallon difference seems worth it.

I have read though that the vehicle cannot sit for a long time. I do drive once every week or so... sometimes for only a couple miles while every other week is usually a 30-50mile round trip.

 

[djw.pro]

Our 5.0’s don’t have a true ethanol sensor. The percentage is a guesstimate based off the O2. General you will see MBT around e40 depending on the quality of the ethanol.

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