E85 and engine internals - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Qwimby1 · 06-01-2019, 12:27 PM

I searched for this but didn't find anything. Has anyone encountered degrading of fuel-system components running E85 and tune?

Westen86 · 06-01-2019, 12:31 PM

Ive heard LOTS of people have been using E85 for tens of thousands of miles. I havent seen anything about the need to upgrade hoses or filters. If you go FI, youll need a pump and injectors depending on your goals.

reeves · 06-01-2019, 03:33 PM

Quote:

Originally Posted by Qwimby1

I searched for this but didn't find anything. Has anyone encountered degrading of fuel-system components running E85 and tune?

Na, you're good.. Go for it!

Irace86.2.0 · 06-01-2019, 06:43 PM

Modern cars are pretty well designed for ethanol because gas has 10% ethanol, so it shouldn't be an issue. Most upgraded components are typically E85 safe like injectors or fuel pumps, but it is always good to confirm.

Lantanafrs2 · 06-01-2019, 10:48 PM

With recent geopolitical bullshit pressuring farmers, look for ethanol production to rise even as the crusty, old conservatives cling to their love of dinosaur bones and the companies that drill for them. Automotive fuel systems better be able to handle alcohol. All that corn has to go somewhere.

BEZO760 · 06-01-2019, 11:20 PM

I have also been searching for an answer to this question and so far all I've found was reassurance that it is way too early to know for sure. But since bad news always travels alot faster than good news I feel confident that we should be fine. I haven't heard of an instance where running e85 was a direct cause of some kind of malfunction in our cars.

smg1138 · 06-01-2019, 11:52 PM

I’ve been running e85 in my FRS pretty regularly for about 4 years and haven’t had any issues. I once sent off an oil sample to Blackstone at 7,500 mi and they said it looked good and to try 9,500 miles the next time. So apparently oil contamination isn’t really an issue with e85 in this car. I sometimes run Shell 93 for long road trips and AutoX events which is probably good for the detergents.

Breadman · 06-01-2019, 11:55 PM

all my wear metals were below average when i blackstoned it. i did have a higher % of fuel in my oil. i had about 1/2% and that lowered my flashpoint they said

Qwimby1 · 06-03-2019, 09:30 AM

I guess our collective experience puts the lie to the auto manufacturers threatening to pull warranties if the government approved 15% alcohol.
5

Irace86.2.0 · 06-03-2019, 11:08 AM

Quote:

Originally Posted by Qwimby1

I guess our collective experience puts the lie to the auto manufacturers threatening to pull warranties if the government approved 15% alcohol.
5

That’s different.

Qwimby1 · 06-04-2019, 12:14 PM

Yeah, in retrospect I see that.

06-01-2019, 12:27 PM	#1
Qwimby1 Senior Member Join Date: Nov 2015 Drives: 14 FRS Monogram, 05 Mazdasped Miata Location: Sarasota, FL Posts: 564 Thanks: 131 Thanked 140 Times in 104 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	E85 and engine internals I searched for this but didn't find anything. Has anyone encountered degrading of fuel-system components running E85 and tune?

06-01-2019, 06:43 PM	#4
Irace86.2.0 Senior Member Join Date: Mar 2017 Drives: Q5 + BRZ + M796 Location: Santa Rosa, CA Posts: 7,884 Thanks: 5,668 Thanked 5,805 Times in 3,299 Posts Mentioned: 70 Post(s) Tagged: 0 Thread(s)	Modern cars are pretty well designed for ethanol because gas has 10% ethanol, so it shouldn't be an issue. Most upgraded components are typically E85 safe like injectors or fuel pumps, but it is always good to confirm. __________________ My Build \| K24 Turbo Swap \| K24T BRZ SOLD

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06-01-2019, 10:48 PM	#5
Lantanafrs2 Senior Member Join Date: Jan 2018 Drives: 2013 frs red Location: South Florida Posts: 3,517 Thanks: 2,520 Thanked 3,088 Times in 1,654 Posts Mentioned: 6 Post(s) Tagged: 1 Thread(s)	With recent geopolitical bullshit pressuring farmers, look for ethanol production to rise even as the crusty, old conservatives cling to their love of dinosaur bones and the companies that drill for them. Automotive fuel systems better be able to handle alcohol. All that corn has to go somewhere.

06-01-2019, 11:20 PM	#6
BEZO760 Member Join Date: May 2019 Drives: Blue 2016 SCION FR-S Location: CA Posts: 90 Thanks: 52 Thanked 40 Times in 25 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	I have also been searching for an answer to this question and so far all I've found was reassurance that it is way too early to know for sure. But since bad news always travels alot faster than good news I feel confident that we should be fine. I haven't heard of an instance where running e85 was a direct cause of some kind of malfunction in our cars.

06-01-2019, 11:52 PM	#7
smg1138 Senior Member Join Date: Jan 2014 Drives: 2013 Raven FR-S Location: Nashville Posts: 775 Thanks: 968 Thanked 213 Times in 136 Posts Mentioned: 3 Post(s) Tagged: 2 Thread(s)	I’ve been running e85 in my FRS pretty regularly for about 4 years and haven’t had any issues. I once sent off an oil sample to Blackstone at 7,500 mi and they said it looked good and to try 9,500 miles the next time. So apparently oil contamination isn’t really an issue with e85 in this car. I sometimes run Shell 93 for long road trips and AutoX events which is probably good for the detergents.

06-01-2019, 11:55 PM	#8
Breadman Senior Member Join Date: Jul 2017 Drives: 2017 BRZ w/PP Location: Pa Posts: 1,027 Thanks: 51 Thanked 302 Times in 225 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	all my wear metals were below average when i blackstoned it. i did have a higher % of fuel in my oil. i had about 1/2% and that lowered my flashpoint they said

06-03-2019, 09:30 AM	#9
Qwimby1 Senior Member Join Date: Nov 2015 Drives: 14 FRS Monogram, 05 Mazdasped Miata Location: Sarasota, FL Posts: 564 Thanks: 131 Thanked 140 Times in 104 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	I guess our collective experience puts the lie to the auto manufacturers threatening to pull warranties if the government approved 15% alcohol. 5

06-04-2019, 12:14 PM	#11
Qwimby1 Senior Member Join Date: Nov 2015 Drives: 14 FRS Monogram, 05 Mazdasped Miata Location: Sarasota, FL Posts: 564 Thanks: 131 Thanked 140 Times in 104 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Yeah, in retrospect I see that.

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