BMW M3 Forum
BMW M3 Forum BMW M3 Gallery BMW M3 Reviews BMW M3 Social Groups BMW M3 Chat M3Forum Sponsors >>
Loading


Mobile M3forum
Go Back   BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X) > Misc > Off Topic
Tire Rack Buy Winter Tires Now!
Not a member? Register Now!
Register Gallery All Albums Garage Search Today's Posts Mark Forums Read Calendar FAQ

Off Topic Place to discuss this and that. Note: We also have "request to join" forums: Guns and Fitness.
(Threads/posts inside may contain material that is NSFW / offensive)


View Poll Results: On cars which require only 87 octane (owners manual), which do you use?
Premium 5 23.81%
87 or 89 octane 16 76.19%
Voters: 21. You may not vote on this poll

Reply
 
Thread Tools Display Modes
Old Tue, May-16-2017, 07:23:50 PM   #31
Pierre i am
ranch me brotendo
 
Pierre i am's Avatar
 
Join Date: Mar 2012
Posts: 3,494
In the garage:
Reputation: 0 Pierre i am has a spectacular aura about

United States




Default Re: Premium gas vs. regular: What's really better for your car? (CBC Marketplace)

Quote:
Originally Posted by EKaru View Post
The engines (requiring 91) will automatically adjust to the higher octane and deliver better performance. With star diagnostics, you can manually change the octane setting. An MB tech had set mine to 93:

http://www.m3forum.net/m3forum/showp...19&postcount=9
Gotcha

Quote:
Originally Posted by terraphantm View Post
Yes and no. Reality is most ECUs pull timing to some extent even with 93 octane. So it is possible they'd pull a little less timing on 93 vs 91. But as long as the car meets the advertised power and mileage with 91, they consider that good enough.

That makes sense
__________________
Sam 2/23/16

https://m.imgur.com/r/funny/vrjdqZ4
Jump to top Pierre i am is offline   Reply With Quote
Sponsored Links
Register now and remove these ads
Old Wed, May-17-2017, 12:14:23 AM   #32
iconoclast
Registered User
 
iconoclast's Avatar
 
Join Date: Apr 2007
Posts: 1,542
Reputation: 0 iconoclast has disabled reputation
Location: In, Out & Around...

United States




Default Re: Premium gas vs. regular: What's really better for your car? (CBC Marketplace)

Quote:
Originally Posted by Pierre i am View Post
This is why Eric's comment about all mfg's setting it up the default for "premium" as 91 makes sense.
I must've misread it because I understood it as all the high end cars are running the wrong fuel.
Jump to top iconoclast is offline   Reply With Quote
Old Wed, May-17-2017, 06:15:37 AM   #33
Rac'nmyT/A
Registered User
 
Rac'nmyT/A's Avatar
 
Join Date: Jul 2004
Posts: 2,171
Reputation: 0 Rac'nmyT/A is on a distinguished road
Location: Metro Area





Default Re: Premium gas vs. regular: What's really better for your car? (CBC Marketplace)

The testing results here are unremarkable. Nothing new really. Also, too many variables have been left out of the equation. Vehicles with engines that require 87 octane will have zero benefits from a performance standpoint*. Vehicles with engines that have high compression ratios will run better with a higher octane rating. Turbo charged or any forced induction engines will also run better with a higher octane rating, especially in hotter climates.

In addition the premium octanes have more/better detergents in them, to keep engines from developing carbon build-up in the intakes and on the valves. Especially important with direct injection engines of today; big difference performance wise in the long run with the advanced detergents.

Here is the article I believe E referenced earlier. It consists of an E46 M3, a Saab, a 4.6 mustang and dodge ram and a couple of other econo boxes!

http://www.caranddriver.com/features/regular-or-premium
__________________

CarbonBlack ZCP/Cinn Interior
6sp Manual
F-235/35/19 R-265/30/19 PSS



“If liberty means anything at all, it means the right to tell people what they do not want to hear.” _George Orwell

Last edited by Rac'nmyT/A; Wed, May-17-2017 at 06:19:28 AM.
Jump to top Rac'nmyT/A is offline   Reply With Quote
Old Wed, May-17-2017, 02:38:52 PM   #34
EKaru
Moderator
 
EKaru's Avatar
 
Join Date: Nov 2004
Age: 42
Posts: 50,132
Reputation: 766 EKaru PorshaEKaru PorshaEKaru PorshaEKaru PorshaEKaru PorshaEKaru PorshaEKaru Porsha
Location: PA & MD

United States




Default Re: Premium gas vs. regular: What's really better for your car? (CBC Marketplace)

^

That's the one, thank you!

__________________
Jump to top EKaru is offline   Reply With Quote
Old Wed, May-17-2017, 03:30:12 PM   #35
maditalian
M3F tag's popularity king
 
maditalian's Avatar
 
Join Date: Jan 2005
Age: 36
Posts: 9,059
Reputation: 0 maditalian is on a distinguished road
Location: Washington, D.C.

Italy




Default Re: Premium gas vs. regular: What's really better for your car? (CBC Marketplace)

Ok so this is my research results based on my very limited data:

Been driving 20 years, owned about 15 cars, 10 motorcycles, 4 boats and 2 track only vehicles.

Every single one of them ('cept the track-only car which was mapped for 100 oct) have used ONLY regular gas throughout their life.

None of them reported any engine issue. Like, ANY engine issue . . at all . . ever.
But wtf do I know.

Also, lol at the dudes that live in cites and say "Oh yeah I can feel the difference with 93 bro!". Really? so now you have like 3 more hp? Hot Damn!
That ought to cut your trip to the mall by 0.0000001 seconds!
__________________
- Kick Out The Epic Motherf**ker -


http://www.youtube.com/watch?v=4NP0TqhVHE0


Quote:
Originally Posted by Maditalian
Charity: It's a two way street
Jump to top maditalian is offline   Reply With Quote
Old Wed, May-17-2017, 04:24:48 PM   #36
Voss
Function over Form
 
Voss's Avatar
 
Join Date: Nov 2013
Posts: 3,177
In the garage:
Reputation: 0 Voss is on a distinguished road
Location: Chicago

United States




Default Re: Premium gas vs. regular: What's really better for your car? (CBC Marketplace)

Bro, if you add up all those 0.0000001 seconds, you can add years to your lyfe. 3 hp is also pretty good. Much better than buying stickers and other mods which give you the same HP gainz.
__________________
Jump to top Voss is offline   Reply With Quote
Old Wed, May-17-2017, 04:52:25 PM   #37
racingbmwm3
Registered User
 
racingbmwm3's Avatar
 
Join Date: May 2013
Posts: 5,937
In the garage:
Reputation: 0 racingbmwm3 is on a distinguished road
Location: somewhere by seattle

United States




Default Re: Premium gas vs. regular: What's really better for your car? (CBC Marketplace)

Quote:
Originally Posted by Rac'nmyT/A View Post
The testing results here are unremarkable. Nothing new really. Also, too many variables have been left out of the equation. Vehicles with engines that require 87 octane will have zero benefits from a performance standpoint*. Vehicles with engines that have high compression ratios will run better with a higher octane rating. Turbo charged or any forced induction engines will also run better with a higher octane rating, especially in hotter climates.

In addition the premium octanes have more/better detergents in them, to keep engines from developing carbon build-up in the intakes and on the valves. Especially important with direct injection engines of today; big difference performance wise in the long run with the advanced detergents.

Here is the article I believe E referenced earlier. It consists of an E46 M3, a Saab, a 4.6 mustang and dodge ram and a couple of other econo boxes!

http://www.caranddriver.com/features/regular-or-premium
Top Tier gas stations use the same amount of detergents in all grades of gas. Quit buying gas at Walmart.
The detergents don't really help DI engines that much since their buildup issues are due to the lack of valve cleaning that PI engines benefit from.
__________________

'09 335Xi
'05 Mini Cooper
'89 325iX
gone:'01 325i, '02 X5 4.6is, '87 325, 94 325i, 93 525it, 84 318i (373k miles), 71 2002
Jump to top racingbmwm3 is offline   Reply With Quote
Old Wed, May-17-2017, 04:56:18 PM   #38
maditalian
M3F tag's popularity king
 
maditalian's Avatar
 
Join Date: Jan 2005
Age: 36
Posts: 9,059
Reputation: 0 maditalian is on a distinguished road
Location: Washington, D.C.

Italy




Default Re: Premium gas vs. regular: What's really better for your car? (CBC Marketplace)

Quote:
Originally Posted by tenfifteen View Post
go ahead and save a few cents, retard the timing, definitely nothing bad will happen

definitely
Yessir. See, after all we do agree on something sometimes
__________________
- Kick Out The Epic Motherf**ker -


http://www.youtube.com/watch?v=4NP0TqhVHE0


Quote:
Originally Posted by Maditalian
Charity: It's a two way street
Jump to top maditalian is offline   Reply With Quote
Old Wed, May-17-2017, 05:01:56 PM   #39
maditalian
M3F tag's popularity king
 
maditalian's Avatar
 
Join Date: Jan 2005
Age: 36
Posts: 9,059
Reputation: 0 maditalian is on a distinguished road
Location: Washington, D.C.

Italy




Default Re: Premium gas vs. regular: What's really better for your car? (CBC Marketplace)

Quote:
Originally Posted by Rac'nmyT/A View Post
The testing results here are unremarkable. Nothing new really. Also, too many variables have been left out of the equation. Vehicles with engines that require 87 octane will have zero benefits from a performance standpoint*. Vehicles with engines that have high compression ratios will run better with a higher octane rating. Turbo charged or any forced induction engines will also run better with a higher octane rating, especially in hotter climates.

In addition the premium octanes have more/better detergents in them, to keep engines from developing carbon build-up in the intakes and on the valves. Especially important with direct injection engines of today; big difference performance wise in the long run with the advanced detergents.

Here is the article I believe E referenced earlier. It consists of an E46 M3, a Saab, a 4.6 mustang and dodge ram and a couple of other econo boxes!

http://www.caranddriver.com/features/regular-or-premium
A bottle of Seafoam or BG44k in yer tank every 6 month or so will clean your gunk infinitely better than Premium vs Regular gas.

Jussayin'
__________________
- Kick Out The Epic Motherf**ker -


http://www.youtube.com/watch?v=4NP0TqhVHE0


Quote:
Originally Posted by Maditalian
Charity: It's a two way street
Jump to top maditalian is offline   Reply With Quote
Old Thu, May-18-2017, 08:10:37 PM   #40
M3Dom
Registered User
 
M3Dom's Avatar
 
Join Date: Mar 2008
Age: 100
Posts: 35,625
In the garage:
Reputation: 0 M3Dom is on a distinguished road
Location: new york

United States




Default Re: Premium gas vs. regular: What's really better for your car? (CBC Marketplace)

only the best
__________________

Porshapwr:I thought every day was steak and BJ day?
Ghost : "She'll prolly suck your balls so hard they'll hatch"
Ben Z.;The Ultimate Driving Simulation Machine
LALaw :OP has been surprised by everything that's happened since the 13th Amendment
Cars : some verts

Jump to top M3Dom is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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

Forum Jump



All times are GMT. The time now is 08:16:36 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
M3Forum.com and M3forum.net is in no way sponsored, endorsed or affiliated by or with BMW NA / BMW AG or any of it's subsidiaries or vendors.
BMW and M3 (E90 M3 | E92 M3 | E93 M3 | E46 M3 | E36 M3 | E30 M3) are registered trademarks of BMW AG.
M3Forum Terms of Service
Copyright ©1999-2017 M3Forum.com
Discussing Premium gas vs. regular: What's really better for your car? (CBC Marketplace) in the Off Topic Forum - Place to discuss this and that. Note: We also have "request to join" forums: Guns and Fitness.
(Threads/posts inside may contain material that is NSFW / offensive) at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)