Long-term effects of E85 - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

supercommode · 01-23-2018, 04:17 PM

Thanks everyone. Lot's of good info and opinions. I'm still deciding on which fuel to run primarily. The E-85 takes a big hit on mileage and I drive about a 100 miles a day. However, it's about $0.60 cheaper... At any rate. Thanks again.

Surok · 01-23-2018, 05:48 PM

its not worth it if you are going to do big mileage. sorry.
your mpg will take a 30% hit.

Submarinesonce · 01-24-2018, 07:44 AM

Quote:

Originally Posted by Surok

its not worth it if you are going to do big mileage. sorry.
your mpg will take a 30% hit.

i do 100 miles a day, I just fuel up every other day instead of every third day....its still cheaper for me to run e85 than 93 per mile

reeves · 01-24-2018, 09:20 AM

I did ~80 miles a day for a couple of years too when I first bought my car.. Fueled up every 2 days too on E85.
I wasn't worried about MPG though.. too busy driving the snot out of it.

carsebuco · 01-25-2018, 02:48 PM

Quote:

Originally Posted by Submarinesonce

i do 100 miles a day, I just fuel up every other day instead of every third day....its still cheaper for me to run e85 than 93 per mile

Where I live, it ends up being same cost per mile. You fill up more often with e85, but it's priced much lower and a lot more fun.

Never going back to 91 unless on trips.

Breadman · 07-24-2018, 09:39 AM

Hate to be that guy but ethanol is pH neutral, so how is e85 acidic?

Quote:

Originally Posted by housecat

I found a good read-up here: http://www.tundraheadquarters.com/bl...-running-e-85/

In case the link breaks, here's a copy-paste:

TLDR; E85 is acidic, hygroscopic, and more acidic when water-contaminated. Acid in the oil can hurt lubrication ability and corrode metal parts. Since the 86 isn't E85 compatible from the factory, it may not be as resistant to acid wear (citation needed). Frequent oil changes is good insurance when running E85, but likely not necessary in factory flex-fuel fitted vehicles.

From a personal experience, I can smell ethanol in my oil during an oil change. I don't have oil analysis data, but the smell is obvious. The presence of ethanol doesn't necessarily mean it hurt my car, but I'd rather be safe than sorry until we have more data about E85 reliability in the 86.

kch · 08-09-2018, 03:46 PM

I know this is an old thread, but if anyone is still concerned with long-term use of E85, this is the most recent UOA I have after using E85 for roughly 40k miles.

chaoskaze · 08-09-2018, 03:50 PM

Quote:

Originally Posted by Surok

http://www.vpracing.com.au/product/vp-m2c try about 300ML in 1 tank of E85

I don't know why nobody clicked thank on that post. *Clicking intensify

Pat · 08-09-2018, 04:05 PM

Quote:

Originally Posted by kch

I know this is an old thread, but if anyone is still concerned with long-term use of E85, this is the most recent UOA I have after using E85 for roughly 40k miles.

How many track days were on this sample?

kch · 08-09-2018, 04:55 PM

Quote:

Originally Posted by Pat

How many track days were on this sample?

Dunno for sure. Between 5 and 7.

Pat · 08-09-2018, 06:46 PM

Whoa, nice. I've never done an oil analysis, but change it every track weekend. Maybe I'll go longer now. I use Mobil 1, too.

ZZT86 · 08-09-2018, 08:59 PM

If you get the oil hot, ie: 212F, it will last longer

. . . with the proviso that the tune isn't overly rich.

reeves · 08-09-2018, 10:16 PM

Quote:

Originally Posted by chaoskaze

Quote:

Originally Posted by Surok

http://www.vpracing.com.au/product/vp-m2c try about 300ML in 1 tank of E85

I don't know why nobody clicked thank on that post. *Clicking intensify

I'm more worried about the additives than the E85 itself

I guess only time will tell...

Pat · 08-09-2018, 10:43 PM

Quote:

Originally Posted by ZZT86

If you get the oil hot, ie: 212F, it will last longer

. . . with the proviso that the tune isn't overly rich.

Yeahhhh... I'm pretty sure that's not a problem. My oil gets to 270 on track days.

08-09-2018, 03:46 PM	#21
kch Senior Misanthrope Join Date: Sep 2014 Drives: 2015 BRZ Series.Blue CWP Location: Seattle, WA Posts: 1,490 Thanks: 1,743 Thanked 1,168 Times in 645 Posts Mentioned: 20 Post(s) Tagged: 2 Thread(s)	I know this is an old thread, but if anyone is still concerned with long-term use of E85, this is the most recent UOA I have after using E85 for roughly 40k miles. Attached Images

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01-23-2018, 05:48 PM	#16
Surok Wise old man Join Date: Jun 2012 Drives: 86 GTS Location: Sydney Posts: 1,003 Thanks: 999 Thanked 240 Times in 161 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	its not worth it if you are going to do big mileage. sorry. your mpg will take a 30% hit.

01-24-2018, 09:20 AM	#18
reeves Senior Member Join Date: Jul 2012 Drives: BRZ Location: ATL, GA Posts: 1,021 Thanks: 289 Thanked 397 Times in 265 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	I did ~80 miles a day for a couple of years too when I first bought my car.. Fueled up every 2 days too on E85. I wasn't worried about MPG though.. too busy driving the snot out of it.

08-09-2018, 08:59 PM	#26
ZZT86 Senior Member Join Date: Jul 2012 Drives: BR86 Location: Location Posts: 841 Thanks: 310 Thanked 146 Times in 114 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	If you get the oil hot, ie: 212F, it will last longer . . . with the proviso that the tune isn't overly rich.

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