E85

[SheepDog]

Finally a station close with true E85. Tested at E90. If I am correct this has to be at least E85 all the time, right?

We have that same style label on the Alta Convenience (usually Conoco stations) here in Colorado. My last fill up tested at 78%. The Kum N' Go stations say "E85", but then have a label stating "minimum 70% Ethanol". My last fill-up at one of these tested at 67%. Get yourself the Fuel-It flex fuel kit. No more filling up test tubes and carrying around a test kit each time you fill up.

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[K4fxd]

I searched labeling requirements. Looks like I'll need to test or use the flex tune.

Ethanol Flex Fuels

Labels for ethanol flex fuel must be printed in black on an orange background. For ethanol flex fuels of 50% or less ethanol, the labels must disclose the exact percentage volume of ethanol, for example, “24% Ethanol,” or the percentage volume rounded to the nearest ten, for example, “30% Ethanol.” For ethanol flex fuels above 50%, but no more than 83% ethanol, the labels may contain the exact percentage volume, the percentage rounded to the nearest ten, or the text “51%-83% Ethanol.” Therefore, the Rule does not permit labeling a fuel as “E85.” In addition, all ethanol flex fuel labels must contain the text “Use Only in Flex-Fuel Vehicles/May Harm Other Engines.”

 

[tdstuart]

I recommend testing basically every time.

You can also ask the gas station workers if they know if the owner is trying to get e85 at the 85%. There is an owner of a gas station where I live that purposely gets e100 to attract modified cars that run e85. He will go on our Arizona e85 group chat and give us updates if the pump is down etc.

 

[Cory S]

I recommend testing basically every time.

You can also ask the gas station workers if they know if the owner is trying to get e85 at the 85%. There is an owner of a gas station where I live that purposely gets e100 to attract modified cars that run e85. He will go on our Arizona e85 group chat and give us updates if the pump is down etc.

The best thing…….MOST setups will operate well within fueling demands, fueling trims and spark tables with as little as 65% even on your general “E85” calibrations. Most don’t know this because they never even look at logs or understand fueling/trims etc. So tuners generally don’t give out this information. They want you to think they are special and unique.

 

[tdstuart]

The best thing…….MOST setups will operate well within fueling demands, fueling trims and spark tables with as little as 65% even on your general “E85” calibrations. Most don’t know this because they never even look at logs or understand fueling/trims etc. So tuners generally don’t give out this information. They want you to think they are special and unique.

Ya these cars can handle variation.

What will happen in AZ is some place will label their ethanol as e85 but it will actually be e54. And if you are running an aggressive tune that could deffiantely be trouble for the motor. Some stations will also randomly switch suppliers and go from e75 to e54. That’s why it’s always good to check it.

 

[SheepDog]

Wengerd confirmed to me that my "E85" tune is good down to E65

 

[rapidredroush]

I can say that the only place I get my E85 here in Texas is at the Kroger locations as it has always tested good. The other locations can get sketchy for sure.

 

[Cory S]

Ya these cars can handle variation.

What will happen in AZ is some place will label their ethanol as e85 but it will actually be e54. And if you are running an aggressive tune that could deffiantely be trouble for the motor. Some stations will also randomly switch suppliers and go from e75 to e54. That’s why it’s always good to check it.

One of the advantages of me picking up 60-80 gallons at a time (after I test it obviously). .

 

[K4fxd]

I run a flex tune and don't worry about it. My car learns the same percentage as I test so I trust my log. If it says 90 it is 90.

I did test this Kroger and it was 90%. My hope was since it did not say "flex" E54 to E83 that it had to be E85.

 

[Biggus Dickus]

We have that same style label on the Alta Convenience (usually Conoco stations) here in Colorado. My last fill up tested at 78%. The Kum N' Go stations say "E85", but then have a label stating "minimum 70% Ethanol". My last fill-up at one of these tested at 67%. Get yourself the Fuel-It flex fuel kit. No more filling up test tubes and carrying around a test kit each time you fill up.

What else can you get at the "Kum N' Go" besides alcohol?

 

[stannypack]

would it be fine to put like a half gallon squirt of e85 with the rest 93 every time for cooling/safety

 

[K4fxd]

would it be fine to put like a half gallon squirt of e85 with the rest 93 every time for cooling/safety

Ford says you can run E15, I have tested to E30 on stock tune. I feel safe adding 2 gallons of true E85 to a full tank on the stock tune.

 

[stannypack]

Ford says you can run E15, I have tested to E30 on stock tune. I feel safe adding 2 gallons of true E85 to a full tank on the stock tune.

nice, too bad I just realized northern virginia has 0 e85 stations lmao

 

[Autopart101]

This is the Kroger off of 236 in Hebron.

I'll have to head there in the next few days. Last time I tested that station, it was E74-75.

 

[Angrey]

Just a note, if you're shaking the kit and reading it instantly you're going to be several points off.

One of the reasons I like the electronic ethanol sensor is that you don't have to sit and wait for it to "settle."

I haven't done enough experimentation to determine what the content change is when you first read it to say 15 or 30 minutes later, but it's significant. Allowing it to sit overnight will adjust it further, but just know that if you're being courteous and not holding up the fuel pump and read it, it's going to be quite a bit HIGHER than the actual quality of the fuel.

Also, denatured ethanol contains 2% various hydrocarbons to make it poisonous and not fit for consumption (a legacy of the alcohol taxes and our Royal overlords) which is why you see a maximum of 83% alcohol (when it's 85% denatured alcohol, which contains the stuff to keep refineries from selling it out the back as hooch).

Fun fact, ethanol is an azeotrope, which means you can't ever get it pure under "normal" physical methods. No matter how much you distill it or frac it, a small portion of water comes over with it. Under normal physical methods, you can only get ethanol to 95.6% alcohol and the remainder is water. They can chemically remove the rest of the water, but Grandpa Joe and his copper still hidden from the revenuers could never exceed about 190 proof.

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