BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications
 
EXXEL Distributions
Post Reply
 
Thread Tools Search this Thread
      01-26-2023, 07:08 PM   #1
sheepdonkey
Registered
0
Rep
4
Posts

Drives: 08' BMW M3, 08 BMW 320d
Join Date: Jan 2023
Location: Melbourne

iTrader: (0)

E10 fuel - good or bad?

Hi,

I recently heard that putting e10 fuel in the M3 (2008) is recommended vs Premium 98 Unleaded.

Does anyone have any thoughts on this or heard similar?
Appreciate 0
      01-26-2023, 11:29 PM   #2
TboneS54
YNWA
TboneS54's Avatar
United_States
652
Rep
570
Posts

Drives: 2004 M3 6spd & 2011 M3 DCT
Join Date: Nov 2009
Location: SoCal

iTrader: (1)

Lol
__________________
/// 2004 Silvergrey M3 Coupe 6MT Slicktop zero options
/// 2011 Jerez/Bamboo E90 M3 DCT Slicktop IG: @na.s54
Appreciate 1
TurboT888266.50
      01-26-2023, 11:30 PM   #3
sheepdonkey
Registered
0
Rep
4
Posts

Drives: 08' BMW M3, 08 BMW 320d
Join Date: Jan 2023
Location: Melbourne

iTrader: (0)

Well that answers it then 😂
Appreciate 0
      01-27-2023, 12:48 PM   #4
TboneS54
YNWA
TboneS54's Avatar
United_States
652
Rep
570
Posts

Drives: 2004 M3 6spd & 2011 M3 DCT
Join Date: Nov 2009
Location: SoCal

iTrader: (1)

E10 is too little ethanol content to have any effect on horsepower and all you're getting is the detrimental effects of having corn sugar in your fuel.

We only have E10 (87/89/91 octane) here in California. I wish we have zero ethanol, 93 octane like we used to decades ago. Government did not mandate E10 for our car's health or perfomance, I can gaurentee you.

To make up for the power robbing 91 octane we have in CA, people will run a mix of around E50 (petrol mixed with E85) to gain some power, but there are potential downsides to the fuel system from the corn. You also have to get larger injectors, and a tune or piggyback for the extra flow that's needed vs pure gasoline. Without upgrading injectors, you may be able to run a mild mixture, but not up to E85 I don't beleive. At least not the injector in the E46 S54, I'm not sure about S65.
__________________
/// 2004 Silvergrey M3 Coupe 6MT Slicktop zero options
/// 2011 Jerez/Bamboo E90 M3 DCT Slicktop IG: @na.s54
Appreciate 1
      01-27-2023, 01:09 PM   #5
Johnny E92
Private
Australia
47
Rep
51
Posts

Drives: BMW E92 M3
Join Date: Dec 2020
Location: Australia

iTrader: (0)

Hi,

I would stick to the 98 octane (from good big name brand petrol stations where possible). If you can afford an M3 there is no use skimping on fuel type and quality to save a few $.
Appreciate 0
      01-27-2023, 02:56 PM   #6
sheepdonkey
Registered
0
Rep
4
Posts

Drives: 08' BMW M3, 08 BMW 320d
Join Date: Jan 2023
Location: Melbourne

iTrader: (0)

Thanks for the responses. I personally didnít think it made sense that E10 was recommended.
Appreciate 0
      01-27-2023, 03:05 PM   #7
pbonsalb
Major General
4401
Rep
9,547
Posts

Drives: 18 F90 M5, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: New England

iTrader: (4)

Where I live, all the gas is E10.
Appreciate 0
      01-27-2023, 06:00 PM   #8
TurboT888
Second Lieutenant
TurboT888's Avatar
No_Country
267
Rep
271
Posts

Drives: MT E92 M3
Join Date: Jul 2018
Location: Ontario

iTrader: (0)

in canada shell V power 91 is 🌽 free
__________________
TTP
Appreciate 0
      01-27-2023, 10:00 PM   #9
pbonsalb
Major General
4401
Rep
9,547
Posts

Drives: 18 F90 M5, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: New England

iTrader: (4)

If I could buy straight 93, I would. But I donít think E10 93 is bad. If I had access to straight E85, I would mix a little into the E10 93, but the nearest E85 is 75 miles away. I donít want to buy 55 gallon drums and pump myself. I do buy meth but use a lot less meth than pump gas.
Appreciate 0
      01-29-2023, 01:50 PM   #10
Longboarder
Major General
3189
Rep
6,679
Posts

Drives: 2016 BMW i8
Join Date: Dec 2006
Location: Monarch Beach

iTrader: (1)

Garage List
My e92 M3 had the same E10 91 octane gas on it for maybe 6-7 months while I traveling a lot and not driving it much. WOT accel was same as with a fresh tank of gas.
__________________
Current BMWs: 2021 X5M, 2012 e92 M3, 2022 X5
2015 Porsche 991 Turbo S
a couple others
IG: longboarder949; YouTube: https://www.youtube.com/channel/UCT1...eoFBszPIK0gf9w
Appreciate 0
      01-29-2023, 03:25 PM   #11
bigjae1976
Major General
bigjae1976's Avatar
1360
Rep
7,941
Posts

Drives: 11 E90 M3 Individual
Join Date: Mar 2006
Location: Houston, TX

iTrader: (22)

Garage List
2004 BMW M3  [9.00]
2011 BMW E90 M3  [10.00]
2013 BMW 328i  [10.00]
Ethanol is actually about 116 octane. The downside is the energy density is lower so it requires more fuel.

Ethanol absorbs moisture and can cause brittle fractures or stress corrosion cracking in steel. Particularly in welds that were not adequately shielded during the weld process. It would be a concern with aftermarket parts with welds.

The only downside is fuel economy goes down and it works your fuel system a little harder. The upside is ethanol is cheaper AND you can use a lower octane fuel and then blend in 116 octane ethanol to get the octane back up. If you have E10 91, its actually 87-89 octane gasoline that is blended up to 91 with ethanol.

The biggest difference in E10 or no ethanol fuels other than octane is the detergent additive. In the US, the EPA mandates additive levels in fuel. Specifically, EPA mandates higher levels of additive in fuels branded "top tier". It's a compliance requirement that the EPA audits. I'd check the clean air act laws in Australia to see if they regulate fuel detergency and additives for emissions purposes.
__________________
2018 F30 320iX Melbourne Red
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red
2000 E36/7 Z3 Steel Blue
Appreciate 0
      01-30-2023, 01:32 AM   #12
drwankel
Captain
drwankel's Avatar
760
Rep
898
Posts

Drives: 2012 E92 M3 ZCP
Join Date: Feb 2016
Location: Bothell, WA

iTrader: (0)

Everywhere I've been in the USA, E10 is the only choice.

Ethanol has less energy per volume vs gasoline. This translates into reduced fuel economy and reduced power. Ethanol free gas is the way to go if you can get it.
Appreciate 1
      02-11-2023, 06:57 PM   #13
smokinjoe64
Naval Aviator
smokinjoe64's Avatar
United_States
173
Rep
552
Posts

Drives: 12 e92 M3 6MT
Join Date: Nov 2008
Location: OC CA

iTrader: (1)

Arrow

Quote:
Originally Posted by drwankel View Post
Everywhere I've been in the USA, E10 is the only choice.

Ethanol has less energy per volume vs gasoline. This translates into reduced fuel economy and reduced power. Ethanol free gas is the way to go if you can get it.
I concur 💯 %
If not mistaken Shell V Power 91, even in CA, is seemingly the last of the 'good stuff', meaning devoid of any ethanol.

...comments?
__________________
`12 e92 M3 6MT - Interlagos Blue | Fox Red Extended |Carbon Leather
Performance Mods: Alpine Stage II, E85; Bomiz Sport X-Pipe; RPI axle-back; aFe CAI; Bilstein B16s w/EDC
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 04:20 AM.




m3post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2023, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST