Does summer e85 have higher ethanol content than winter blend? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Steveiam · 05-16-2020, 10:25 PM

As the title states, does summer e85 have higher ethanol content than winter e85?

Thanks

Yoshoobaroo · 05-16-2020, 11:41 PM

I stand corrected:

Vapor pressure is now adjusted with additives, not ethanol percentage, all classes have the same 51-83% range.

https://afdc.energy.gov/files/u/publ...l_handbook.pdf

soundman98 · 05-16-2020, 11:45 PM

no. it's in the name. 85% ethanol.

what changes from summer to winter is the fuel additive packages--the stuff to clean injectors and make kittens purr.

Sapphireho · 05-16-2020, 11:46 PM

The one station I went to all the time when I lived in Nor Cal was always the same year round. About 82%

Sapphireho · 05-17-2020, 12:10 AM

Quote:

Originally Posted by soundman98

no. it's in the name. 85% ethanol.

.

Depends on state law. I have never heard of e85 be at 85%. Most of the time it is less. If I remember right, in California e85 had to be at least 70%. Some states it can be as low as 50.

One note, even at 82, I had to add some premium in the mix when it got cold for starting. And I'm talking California cold, like 45°f. I couldn't imagine starting pure e85 in real cold.

Haven't found any in Idaho. I hear there is a couple stations in Boise.

soundman98 · 05-17-2020, 12:23 AM

#tolerances

mrjj · 05-17-2020, 05:28 AM

Here in Sweden E85 is 80-85% at summer time and 70-77% during the cold months. Fuel additives does not differ.

bcj · 05-17-2020, 10:49 AM

In these troubled times ...

wash your gum.

Irace86.2.0 · 05-17-2020, 06:05 PM

Quote:

Originally Posted by Yoshoobaroo

I stand corrected:

Vapor pressure is now adjusted with additives, not ethanol percentage, all classes have the same 51-83% range.

https://afdc.energy.gov/files/u/publ...l_handbook.pdf

I don't see anything that says that.

BRZ_88 · 05-23-2020, 08:20 PM

Here in Minnesota my local gas station has 65% right now. It can vary depending on time of year, what state you're in and the price of regular gasoline.

Irace86.2.0 · 05-23-2020, 11:15 PM

Every state has different ethanol content with more in the summer than winter. Check Appendix E on page 35 and 36:

https://afdc.energy.gov/files/u/publ...l_handbook.pdf

chaoskaze · 05-24-2020, 12:02 AM

Quote:

Originally Posted by Yoshoobaroo

I stand corrected:

Vapor pressure is now adjusted with additives, not ethanol percentage, all classes have the same 51-83% range.

https://afdc.energy.gov/files/u/publ...l_handbook.pdf

Thanks for the info, learning something new everyday is the best feeling.

Irace86.2.0 · 05-24-2020, 10:50 AM

Quote:

Originally Posted by chaoskaze

Thanks for the info, learning something new everyday is the best feeling.

What did you learn? I think he got confused. Ethanol is what is adjusted, not additives.

Irace86.2.0 · 05-24-2020, 12:21 PM

Quote:

Originally Posted by soundman98

no. it's in the name. 85% ethanol.

what changes from summer to winter is the fuel additive packages--the stuff to clean injectors and make kittens purr.

Do you have anything to back this up?

05-16-2020, 10:25 PM	#1
Steveiam Member Join Date: Jun 2019 Drives: 86 Location: Dallas, TX Posts: 65 Thanks: 12 Thanked 20 Times in 12 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Does summer e85 have higher ethanol content than winter blend? As the title states, does summer e85 have higher ethanol content than winter e85? Thanks

05-16-2020, 11:45 PM	#3
soundman98 ProCrastinationConsultant Join Date: Sep 2013 Drives: '14 Ranger, '18 Tacoma 4Dr LB Location: chicago-ish Posts: 11,330 Thanks: 35,240 Thanked 13,672 Times in 6,781 Posts Mentioned: 98 Post(s) Tagged: 0 Thread(s)	no. it's in the name. 85% ethanol. what changes from summer to winter is the fuel additive packages--the stuff to clean injectors and make kittens purr. __________________ "The time you enjoy wasting is not wasted time"

05-17-2020, 12:23 AM	#6
soundman98 ProCrastinationConsultant Join Date: Sep 2013 Drives: '14 Ranger, '18 Tacoma 4Dr LB Location: chicago-ish Posts: 11,330 Thanks: 35,240 Thanked 13,672 Times in 6,781 Posts Mentioned: 98 Post(s) Tagged: 0 Thread(s)	#tolerances __________________ "The time you enjoy wasting is not wasted time"

05-23-2020, 11:15 PM	#11
Irace86.2.0 Senior Member Join Date: Mar 2017 Drives: Q5 + BRZ + M796 Location: Santa Rosa, CA Posts: 7,883 Thanks: 5,668 Thanked 5,804 Times in 3,299 Posts Mentioned: 70 Post(s) Tagged: 0 Thread(s)	Every state has different ethanol content with more in the summer than winter. Check Appendix E on page 35 and 36: https://afdc.energy.gov/files/u/publ...l_handbook.pdf __________________ My Build \| K24 Turbo Swap \| K24T BRZ SOLD

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05-16-2020, 11:46 PM	#4
Sapphireho ¯\_(ツ)_/¯ Join Date: Mar 2016 Drives: '15 ultramarine Location: Idaho Posts: 13,192 Thanks: 5,451 Thanked 18,239 Times in 8,609 Posts Mentioned: 155 Post(s) Tagged: 0 Thread(s)	The one station I went to all the time when I lived in Nor Cal was always the same year round. About 82%

05-17-2020, 05:28 AM	#7
mrjj Member Join Date: Mar 2019 Drives: GT86 2013 Location: Sweden Posts: 49 Thanks: 47 Thanked 24 Times in 10 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Here in Sweden E85 is 80-85% at summer time and 70-77% during the cold months. Fuel additives does not differ.

05-23-2020, 08:20 PM	#10
BRZ_88 Imperator Join Date: May 2020 Drives: Supercharged 2013 BRZ Limited Location: Minnesota Posts: 38 Thanks: 19 Thanked 26 Times in 13 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Here in Minnesota my local gas station has 65% right now. It can vary depending on time of year, what state you're in and the price of regular gasoline.

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