E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rating: Thread Rating: 1 votes, 5.00 average. Display Modes
Old 04-24-2008, 08:06 AM   #41
328iBMW
Registered User
 
Join Date: Oct 2006
Location: Cinci
Posts: 713
My Ride: C320
Quote:
Originally Posted by nfafan View Post
Does anyone know which national gas station chains sell 91 octane? All I can find in West PA is 87 Regular, 89 Silver/Premium, and 93 Gold/Ultra.

We used to have Sunoco's here that sold Ultra in 94, but now it is just 93. I used Amoco Gold (93) exclusively in my 99 Maxima, but occasionally put Sunoco Ultra 94 in it. I am sure it made a seat of the pants difference.

Now I use either Amoco 93 or Sunoco 93 in the Maxi and '04 325XI - thus the question; Where can I find 91 in West PA? Thanks!
In some states, 91 octane is hard to find. It's all 93 and 94. So you could get a chip or reprogram for 93 in order to get the added power benefit of higher octane.
__________________
What makes you come alive?.........Go do it.
328iBMW is offline   Reply With Quote
Old 04-24-2008, 08:43 AM   #42
nleksan
Registered User
 
Join Date: Jan 2006
Location: Cincinnati
Posts: 765
My Ride: 328Ci, 325i, 740i
Send a message via AIM to nleksan
Yeah, why would you want 91 when you're one of the lucky few of us to get 93/94? All the guys out west don't get anything higher than 91, which is why the software is programmed to take advantage of that specific gasoline, but it can be set/programmed to work with 93 (if you have access to it all the time; otherwise it WILL cause pinging), and gain even more power through more ignition timing advancement.
__________________
(Temporary Sig)

- DPE - Apex - BBS - PFC 6/4 2pc BBK - KW Clubsport - PowerFlex -
- M-Tech - Rogue Engineering - Ground Control - Odyssey -
- Hotchkis - AFE - UUC - AKG - Dinan - VAC - TC Kline -
- TMS - OS Giken - SuperSprint - Vorsteiner - Recaro - Samco - Fluidyne - MORE! -
GARAGE:
- 2000 328Ci Topaz 6MT-Swap ZSP/ZPP/ZCW/HID/HK (Street/Track)
- 2001 325i TiAg 5MT/ZSP/ZCW (Street)
- 2006 M3 ZCP AW/IR 6MT/ZCP/HID (Street)
nleksan is offline   Reply With Quote
Old 04-24-2008, 08:50 AM   #43
330ciEvo
Registered User
 
Join Date: Jan 2008
Location: NC
Posts: 157
My Ride: 01Audi 2.7T,95 Supra
I fill up with 100 octane or 110 race gas...wouldnt have it any other way. At 6-7 bucks a gallon its not that bad Race gas ftw
330ciEvo is offline   Reply With Quote
Old 04-24-2008, 09:25 AM   #44
BB BMW
Registered User
 
Join Date: May 2007
Location: Right Here
Posts: 499
My Ride: 04 330ci ZHP
Quote:
Originally Posted by 328iBMW View Post
R E A L L Y

How does grade of gas have nothing to do with octane? How old are you?

Your question was answered.

It depends on how you drive. If you put your engine under high load, it will want to detonate and the knock sensors will tell the computer to retard the timing resulting in lowered efficiency and power.

If you're cruising on the highway under low load, then 87 should result in the same efficiency as 93 octane.

Learn to
I believe I stated that the question did not have anything to do with the "PRICE OF GAS OR OCTANE".

Hell.......... I know the grade of gas has everything to do with the octane. (and price)

As far as age, probably older than you, but a lot wiser.

Guess I just stirred up a hornets nest for some of you who like to falme people. Flammer
__________________

The democracy will cease to exist when you take away from those who are willing to work and give to those who would not.
Thomas Jefferson
BB BMW is offline   Reply With Quote
Old 04-24-2008, 11:05 AM   #45
Spidey12
Registered User
 
Join Date: Mar 2008
Location: new orleans
Posts: 94
My Ride: 2000 328i 4DR
I filled up my car with reg gas the other day (i always use premuim) and the acceleration was ****. Also, thw car wa sso sluggish, I would punish the pedal and the car took about a second to respond.

On premuim acceleration and pedal to action is almost instantaeuos.

Moral: Don't put anything less than 91 in your car. And btw I too notice better mileage with the premuim. So I wound up spending the same as if I just put regular, which would have burned quicker.
__________________


BMW: Hauls ass and pisses on a Mercedes
Jet Black. 2000 Auto. Angel Eyes, Smoked Corners, CF Emblems.
Spidey12 is offline   Reply With Quote
Old 04-24-2008, 12:52 PM   #46
havnfun328
Registered User
 
Join Date: Mar 2003
Location: Wichita
Posts: 553
My Ride: 99 328i Stock
This thread has gone way beyond what it should. The answer is simple:

1. You will get slightly better mileage w/ 91 octane.
2. The improvement won't make up for the increased price. You will pay more $/mile.
3. You will lose a few HP, but probably not enough to really notice.
4. You won't hurt the engine by running 87.

The end. (BTW, I run 91 because I can and it makes me feel better. But if gas keeps going up I may switch)
__________________
2003 E39 M5 Lemans Blue: The most amazing car ever built
--------
1999 E46 328i Bone stock 5-speed: Soon to be track rat
235K and still running strong
havnfun328 is offline   Reply With Quote
Old 04-24-2008, 01:01 PM   #47
dltbmw
Registered User
 
Join Date: Mar 2006
Location: Midland, Michigan
Posts: 169
My Ride: 2004 325xi
Again it is very simple the manual and the gas tank cover says at minimum to run premium. i have tried running regular and when i switched back to premium i noticed a difference, it ran and accelerated much smoother. Just stick to what the manufacturer recommends.
__________________


2004 325xi= Traded In
dltbmw is offline   Reply With Quote
Old 04-24-2008, 04:07 PM   #48
devedean
Registered User
 
Join Date: Jul 2006
Location: San Rafael, CA
Posts: 61
My Ride: 323i
Oh, man. I thought I would add a little fuel to the fire (pun intended). The following was coppied and pasted directly from my 2000 323i owner's manual .PDF downloaded from the BMW NA website:

Use unleaded gasoline only.
Recommended fuel: Premium with a
minimum octane rating of 91 AKI.
BMW engines are equipped with knock
sensors and will adapt automatically to
different octane ratings, provided that
the minimum octane requirement
(87 AKI) is met.
Fuels with higher octane ratings will provide
enhanced performance and lower
fuel consumption, while the use of fuels
with lower octane ratings will have the
opposite effect.
Do not use leaded fuels. The use of
leaded fuels will cause permanent
damage to the system's oxygen sensor
and the catalytic convertor.<
AKI = Anti Knock Index
devedean is offline   Reply With Quote
Old 04-24-2008, 04:35 PM   #49
Dunbar
Registered User
 
Join Date: Aug 2002
Location: SoCal
Posts: 814
My Ride: '04 330i ZHP 6MT
For those of you who don't follow BMW's recommendation on the following:

Maintenance only at the dealer
Only use BMW OEM parts/fluids
Only change your oil every 15k miles
Do not install modified parts

Why are you so adament about their recommendation to run 91 octane?
Dunbar is offline   Reply With Quote
Old 04-24-2008, 05:12 PM   #50
BB BMW
Registered User
 
Join Date: May 2007
Location: Right Here
Posts: 499
My Ride: 04 330ci ZHP
Quote:
Originally Posted by devedean View Post
Oh, man. I thought I would add a little fuel to the fire (pun intended). The following was coppied and pasted directly from my 2000 323i owner's manual .PDF downloaded from the BMW NA website:

Use unleaded gasoline only.
Recommended fuel: Premium with a
minimum octane rating of 91 AKI.
BMW engines are equipped with knock
sensors and will adapt automatically to
different octane ratings, provided that
the minimum octane requirement
(87 AKI) is met.
Fuels with higher octane ratings will provide
enhanced performance and lower
fuel consumption, while the use of fuels
with lower octane ratings will have the
opposite effect.
Do not use leaded fuels. The use of
leaded fuels will cause permanent
damage to the system's oxygen sensor
and the catalytic convertor.<
AKI = Anti Knock Index
This was the answer I was waundering about.

Thanks You and GOOD NIGHT.

We can close this thread now.
__________________

The democracy will cease to exist when you take away from those who are willing to work and give to those who would not.
Thomas Jefferson
BB BMW is offline   Reply With Quote
Old 04-24-2008, 08:23 PM   #51
zhp pilot
Falling from 14k ft.
 
zhp pilot's Avatar
 
Join Date: Apr 2008
Location: Charlotte, NC
Posts: 4,029
My Ride: is totaled :(
Quote:
Originally Posted by Dunbar View Post
For those of you who don't follow BMW's recommendation on the following:

Maintenance only at the dealer
Only use BMW OEM parts/fluids
Only change your oil every 15k miles
Do not install modified parts

Why are you so adamant (spelling correction) about their recommendation to run 91 octane?
i know the right thing to do is let this thread die off but i have to throw my .02 on this. this post has nothing to do with the original question.

Maintenance only at the dealer - BMW makes more money
Only use BMW OEM parts/fluids - BMW makes more money; better fluids = better car
Only change your oil every 15k miles - no negative outcome by changing your oil at shorter intervals. to my recollection, BMW doesn't advise against oil changes at shorter intervals, only longer than 15k.
Do not install modified parts - better parts = better car.

Running less than 91 octane - whatever the severity of the outcome, it can only be negative as far as the car's concerned. BMW has nothing to gain financially by recommending what the car's designed to use.
zhp pilot is offline   Reply With Quote
Old 04-24-2008, 08:34 PM   #52
violent_bimmer
Registered User
 
Join Date: Nov 2005
Location: Texas
Posts: 91
My Ride: 2001 325i
Send a message via AIM to violent_bimmer
i have ran mine on 87 since i bought it in 2001, it has almost 100k miles on it, and it's still running like a champ!
__________________
soon to be at 500 hp
violent_bimmer is offline   Reply With Quote
Old 04-24-2008, 08:51 PM   #53
zhp pilot
Falling from 14k ft.
 
zhp pilot's Avatar
 
Join Date: Apr 2008
Location: Charlotte, NC
Posts: 4,029
My Ride: is totaled :(
Quote:
Originally Posted by violent_bimmer View Post
i have ran mine on 87 since i bought it in 2001, it has almost 100k miles on it, and it's still running like a champ!
a champ, maybe, but a "watered down" champ at best.

note on your sig, do you expect 500 hp on 87?

Last edited by zhp pilot; 04-24-2008 at 09:00 PM.
zhp pilot is offline   Reply With Quote
Old 01-07-2009, 09:58 PM   #54
sunj
Registered User
 
Join Date: Aug 2008
Location: Edmonton
Posts: 6
My Ride: 2002 320i
my god this thread is boring...
sunj is offline   Reply With Quote
Old 01-07-2009, 10:20 PM   #55
NOVAbimmer
Registered User
 
Join Date: Aug 2006
Location: VA
Posts: 12,487
My Ride: 14 Impala FXST M796
I run on turpentine and grain alcohol

srsly, though, I've put everything from 87 to 110 in my car, and nothing's hurt it.

If the manual recommended BMW brand gasoline at 50 cents more a gallon, the line at the dealership would stretch around the block
__________________
NOVAbimmer is offline   Reply With Quote
Old 01-08-2009, 07:39 AM   #56
jonmc
Registered User
 
Join Date: Aug 2008
Location: Stouffville, ON
Posts: 52
My Ride: 2001 330Xi
I have a friend who had an mid 90's Toyota 4Runner (4 cyl). They would use it to drive from Toronto into the NW Territories for month long canoe trips, with the vehicle loaded and a canoe on top (huge drag). I know the technology is totally different, but he always used premium because his experience had shown better mileage and more power.
jonmc is offline   Reply With Quote
Old 01-08-2009, 11:04 AM   #57
I8URAMG
Registered User
 
Join Date: Jul 2008
Location: Miami/Pembroke Pines,FL
Posts: 515
My Ride: BMW 325i
Guys if you don't use 91 or higher you car is gona knock.My dad always told me even in my 94 celica I always used prenium the spark plugs will always be cleaner and you get more power out of the motor also depending how you drive the mpg will increase also but honestly if you drive a bmw and you can't affored its gas then get rid of it if you take care of her she will take care of you its like drinking vinegar or water like come on people for $4 more to fill up trust me its worth it I rather pay that then maintence when the car breaks.
I8URAMG is offline   Reply With Quote
Old 01-08-2009, 02:02 PM   #58
zhp pilot
Falling from 14k ft.
 
zhp pilot's Avatar
 
Join Date: Apr 2008
Location: Charlotte, NC
Posts: 4,029
My Ride: is totaled :(
Quote:
Originally Posted by sunj View Post
my god this thread is boring...
my god this thread is old...
__________________
'04 Silbergrau Metallic ZHP 6MT

zhp pilot is offline   Reply With Quote
Old 01-08-2009, 02:34 PM   #59
323iINt.o
Registered User
 
Join Date: Apr 2006
Location: toronto
Posts: 1,160
My Ride: 328i
I switched from 91 to 89 when gas prices were high..I, to be honest, didnt feel to much of a difference to start buying 91 now when gas prices dropped.





And my car didnt blow up and my MPG barely changed, maybe 5%, but with the impossibility to mimic the same driving conditions over and over, I doubt that 5% had anything to do with it, room for error.
__________________


NEED SMOKED CORNERS AND MARKERS, PM ME IF YOU GOT SOME!

Last edited by 323iINt.o; 01-08-2009 at 02:36 PM.
323iINt.o is offline   Reply With Quote
Old 01-08-2009, 02:36 PM   #60
JoeVert
Registered User
 
Join Date: Jul 2008
Location: Denver
Posts: 742
My Ride: 135i
Quote:
Originally Posted by 330ciEvo View Post
I fill up with 100 octane or 110 race gas...wouldnt have it any other way. At 6-7 bucks a gallon its not that bad Race gas ftw
I know the thread is old but this post made me laugh Who the hell wastes their money on racing gas?
__________________
-JoeVert
JoeVert is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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 On
Censor is ON





All times are GMT -5. The time now is 06:41 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use