Anyone run 89 octane?

nycbr · 02-28-2012, 08:59 PM

I always use 93 but with the price of gas going up I am tempted. I have heard premium gives better mpg, so it might be a wash. Curious to hear if anyone uses it on a NA E90 and how it runs. Thanks

just4kickz · 02-28-2012, 09:07 PM

Quote:

Originally Posted by nycbr

I always use 93 but with the price of gas going up I am tempted. I have heard premium gives better mpg, so it might be a wash. Curious to hear if anyone uses it on a NA E90.

93? why not use 91?

brownsound · 02-28-2012, 09:15 PM

Quote:

Originally Posted by just4kickz

93? why not use 91?

There is no 91 here, only 93

e90pilot · 02-28-2012, 09:27 PM

I run 91 regularly but I accidentally put regular in it once. It didn't knock audibly at all but it had ABSOLUTLY NO POWER lol!

EngineCo52 · 02-28-2012, 10:39 PM

whats 89octane??

just4kickz · 02-28-2012, 11:28 PM

Quote:

Originally Posted by brownsound

There is no 91 here, only 93

oh did not know... yeah that sucks. 93 is rare in california.

kiwi29 · 02-28-2012, 11:43 PM

Quote:

Originally Posted by just4kickz

oh did not know... yeah that sucks. 93 is rare in california.

i wish we had 93 oct to pump

brownsound · 02-28-2012, 11:59 PM

Quote:

Originally Posted by just4kickz

oh did not know... yeah that sucks. 93 is rare in california.

Quote:

Originally Posted by kiwi29

i wish we had 93 oct to pump

That's odd, is there any reason why 91 is the standard in cali?

spacemonkey1112 · 02-29-2012, 12:09 AM

because 93 would probably cause 4.60 a gallon here hahaha

DUI Elite · 02-29-2012, 12:15 AM

wow i didn't know cali only gets 91.

I only use Shell 93 in mine.

Unless you have a tune for it, don't run under 91. Your car will run lean as the flashpoint of 89 octane and 91+ octane isn't the same. Immediate difference will be loss in power, and loss in fuel economy (maybe not drastic, but noticeable). Overtime (like way overtime - think 250k+ miles) you can actually form mini craters on the top of your pistons.

brownsound · 02-29-2012, 01:03 AM

Quote:

Originally Posted by spacemonkey1112

because 93 would probably cause 4.60 a gallon here hahaha

OUCH!! Last time I filled up it was around 3.80

1QuikWS6 · 02-29-2012, 02:01 AM

Started using 89, tried higher grade, didn't make any discernable difference in either performance or mileage - went back to 89 and have never used anything else since then.

Runs as good as a NA 328 can. Depending on the engine configuration, there is no such thing as the higher you go in octane, the better it runs. At a certain point, higher grade does nothing but cost more...

Now if it was a turbo car, supercharged, or running nitrous in very hot summer months - the higher grade may be helpful. I run 93 in my T/A with 427 LS1, 11.5:1 compression & nitrous and that is fine. I tried AV gas at >100 octane a couple times and it made no difference. The T/A was tuned on the dyno with HPTuners using 93 octane...

RazRokz.! · 02-29-2012, 02:35 AM

Some of the gas prices you guys are claiming are crazy high.

I pay 3.46 a gallon for premium in kansas...

1QuikWS6 · 02-29-2012, 02:39 AM

$3.83 for 89 in western PA

Up 50 cent from last month - now they're blaming the rising prices of gas on East Coast due to shut down of a refinery...

brownsound · 02-29-2012, 02:48 AM

Quote:

Originally Posted by RazRokz.!

Some of the gas prices you guys are claiming are crazy high.

I pay 3.46 a gallon for premium in kansas...

You're joking right? If you aren't I might move there lol

spacemonkey1112 · 02-29-2012, 04:33 AM

damn under 3.50 for a gallon?!?!?! im in merced, ca and last i checked gas 4.39 for 91 :'( da faack!?

TSM330i · 02-29-2012, 06:24 AM

BMW has admitted that there will be NO issues running a lower octave fuel in their cars. There will be a slight decrease in hp and tq, but other than that, the computer will take care of timing advancement and will not allow the engine to ping.

If you plan on keeping your car a long time, definitely try to use Top Tier Gas as tested by many of the major automotive manufacturers. The test makes sure that the gas company is putting in all the cleaning agents to help the fuel system and combustion chamber stay clean. Yes, the list does change based on the latest tests so retailers can fall off the list or be added.
www.toptiergas.com

brownsound · 02-29-2012, 09:02 AM

Quote:

Originally Posted by AW325xi

BMW has admitted that there will be NO issues running a lower octave fuel in their cars. There will be a slight decrease in hp and tq, but other than that, the computer will take care of timing advancement and will not allow the engine to ping.

If you plan on keeping your car a long time, definitely try to use Top Tier Gas as tested by many of the major automotive manufacturers. The test makes sure that the gas company is putting in all the cleaning agents to help the fuel system and combustion chamber stay clean. Yes, the list does change based on the latest tests so retailers can fall off the list or be added.
www.toptiergas.com

That's good information to know but I won't consider lower octane fuel until gas is >$7, but by that time I think I will be riding around on a tricked out bicycle instead of a modded BMW

just4kickz · 02-29-2012, 10:56 AM

Quote:

Originally Posted by spacemonkey1112

because 93 would probably cause 4.60 a gallon here hahaha

i'm already paying 4.6 for 91

i think i got 12 gallons yesterday and it was like 60 bucks

Hooy · 02-29-2012, 11:04 AM

I use 93 only because my car is tuned for it, but also because I don't mind spending $3 extra every week for the peace of mind.

RazRokz.! · 02-29-2012, 11:51 AM

Quote:

Originally Posted by brownsound

You're joking right? If you aren't I might move there lol

91 octane/ 3.46 Not worth moving here though, aint sh*t to do anywhere... lol

onebadmofo · 02-29-2012, 11:59 AM

The price difference is like 10-20 cents per gallon, no? Skip on Starbucks next time and fiill your damn car up with 93.

02-28-2012, 08:59 PM	#1
nycbr First Lieutenant 95 Rep 338 Posts Drives: 2008 TiAg 328xi Join Date: Jun 2011 Location: nu yawk iTrader: (0)	Anyone run 89 octane? I always use 93 but with the price of gas going up I am tempted. I have heard premium gives better mpg, so it might be a wash. Curious to hear if anyone uses it on a NA E90 and how it runs. Thanks Last edited by nycbr; 02-28-2012 at 09:21 PM..
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02-28-2012, 09:27 PM	#4
e90pilot Freight Dawg 104 Rep 2,103 Posts Drives: E90 325i Join Date: Jul 2005 Location: Oakland, CA iTrader: (3)	I run 91 regularly but I accidentally put regular in it once. It didn't knock audibly at all but it had ABSOLUTLY NO POWER lol! __________________ --Marcelo '06 Arctic Metallic 325i \| Sport Package \| 6MT \| Dinan Stage III suspension \| Dinan exhaust \| 330i manifold swap! Click here! \| Active Autowerke tune \| 135i Brake Calipers \| Deiselboost caliper brackets \| E46 M3 front rotors
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02-28-2012, 10:39 PM	#5
EngineCo52 Major 60 Rep 1,457 Posts Drives: 2007 Montego 328xi CPE Join Date: May 2011 Location: Havre de Grace, MD iTrader: (2)	whats 89octane?? __________________ E92 328xi Mods-KW V1-BMW Performance Exhaust-Matte Black Grill-CF Mirror Covers-CF B-Pillars-20% Tint-Coming soon:AG M310's, M3 Rep Front, Black Roof, Vinyl Window Trim E9x Picture Game-8 Points-Roundabout, Something Remarkable(stack of 50 g's), Cruise Memorabilia, Dirt Road w/ Trees, Michael Jackson, Police Station ,Dress-Up Funny, TPMS
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02-29-2012, 12:09 AM	#9
spacemonkey1112 Captain 64 Rep 954 Posts Drives: E90 325i AW Join Date: Jan 2007 Location: 818, CA iTrader: (0)	because 93 would probably cause 4.60 a gallon here hahaha __________________ 2006 E90 325i \| Sports Package \| 6MT \| 3IM \| PE \| AA \|
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02-29-2012, 12:15 AM	#10
DUI Elite ///M at Heart 90 Rep 1,954 Posts Drives: 06 SGM E90, 15 BSM E84 Join Date: Jan 2011 Location: Chicago, IL iTrader: (4)	wow i didn't know cali only gets 91. I only use Shell 93 in mine. Unless you have a tune for it, don't run under 91. Your car will run lean as the flashpoint of 89 octane and 91+ octane isn't the same. Immediate difference will be loss in power, and loss in fuel economy (maybe not drastic, but noticeable). Overtime (like way overtime - think 250k+ miles) you can actually form mini craters on the top of your pistons.
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02-29-2012, 02:01 AM	#12
1QuikWS6 No 55mph 1622 Rep 8,476 Posts Drives: F32 435ix MSport Join Date: Jul 2009 Location: Blitzburgh, PA iTrader: (113) Garage List 2022 BMW M440ix Vert [0.00] 2015 BMW 435ix MSport [0.00] 2000 Pontiac Trans Am [0.00]	Started using 89, tried higher grade, didn't make any discernable difference in either performance or mileage - went back to 89 and have never used anything else since then. Runs as good as a NA 328 can. Depending on the engine configuration, there is no such thing as the higher you go in octane, the better it runs. At a certain point, higher grade does nothing but cost more... Now if it was a turbo car, supercharged, or running nitrous in very hot summer months - the higher grade may be helpful. I run 93 in my T/A with 427 LS1, 11.5:1 compression & nitrous and that is fine. I tried AV gas at >100 octane a couple times and it made no difference. The T/A was tuned on the dyno with HPTuners using 93 octane... __________________ F32 435ix//MGM//M Sport-Prem-Tech-Driver Assist-Lighting-Cold Weather-Dyn Handling Pkgs//M4 Black Lthr Int w/M4 Alum Blade Trim//HK w/Bavsound Stg3//763M//M4 Euro LCI Tails//M4 Mirrors w/CF Covers//AWCarbon CF F/R Spoilers-Side Splitters-Diffuser 6WB/ID6 HU+HUD/IND M4 Alcantara Armrest//PURE S2 Turbo//AA FMIC+DP//ER CP+TIC//3.5bar TMAP/TS DV//AWE Tuning Exh w/Blk Tips//Turner MS CF Intake//BM3 Cary Jordan Tune//MPerf Diff//PrecRW Ignition Kit Last edited by 1QuikWS6; 02-29-2012 at 02:07 AM..
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02-29-2012, 02:35 AM	#13
RazRokz.! Captain 18 Rep 551 Posts Drives: 07 BMW 328i Join Date: Aug 2011 Location: California iTrader: (0)	Some of the gas prices you guys are claiming are crazy high. I pay 3.46 a gallon for premium in kansas...
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02-29-2012, 02:39 AM	#14
1QuikWS6 No 55mph 1622 Rep 8,476 Posts Drives: F32 435ix MSport Join Date: Jul 2009 Location: Blitzburgh, PA iTrader: (113) Garage List 2022 BMW M440ix Vert [0.00] 2015 BMW 435ix MSport [0.00] 2000 Pontiac Trans Am [0.00]	$3.83 for 89 in western PA Up 50 cent from last month - now they're blaming the rising prices of gas on East Coast due to shut down of a refinery... __________________ F32 435ix//MGM//M Sport-Prem-Tech-Driver Assist-Lighting-Cold Weather-Dyn Handling Pkgs//M4 Black Lthr Int w/M4 Alum Blade Trim//HK w/Bavsound Stg3//763M//M4 Euro LCI Tails//M4 Mirrors w/CF Covers//AWCarbon CF F/R Spoilers-Side Splitters-Diffuser 6WB/ID6 HU+HUD/IND M4 Alcantara Armrest//PURE S2 Turbo//AA FMIC+DP//ER CP+TIC//3.5bar TMAP/TS DV//AWE Tuning Exh w/Blk Tips//Turner MS CF Intake//BM3 Cary Jordan Tune//MPerf Diff//PrecRW Ignition Kit
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02-29-2012, 04:33 AM	#16
spacemonkey1112 Captain 64 Rep 954 Posts Drives: E90 325i AW Join Date: Jan 2007 Location: 818, CA iTrader: (0)	damn under 3.50 for a gallon?!?!?! im in merced, ca and last i checked gas 4.39 for 91 :'( da faack!? __________________ 2006 E90 325i \| Sports Package \| 6MT \| 3IM \| PE \| AA \|
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02-29-2012, 06:24 AM	#17
TSM330i 2006 330i, TSM, Black, manual, sport 878 Rep 3,699 Posts Drives: '17 C2, GTI, Z4 3.0si Racecar Join Date: Nov 2005 Location: Chester Springs, PA iTrader: (2)	BMW has admitted that there will be NO issues running a lower octave fuel in their cars. There will be a slight decrease in hp and tq, but other than that, the computer will take care of timing advancement and will not allow the engine to ping. If you plan on keeping your car a long time, definitely try to use Top Tier Gas as tested by many of the major automotive manufacturers. The test makes sure that the gas company is putting in all the cleaning agents to help the fuel system and combustion chamber stay clean. Yes, the list does change based on the latest tests so retailers can fall off the list or be added. www.toptiergas.com __________________ 2017 Porsche C2 - manual of course 2015 GTI S 2008 BMW Z4 3.0si Coupe - because racecar
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02-29-2012, 11:04 AM	#20
Hooy Colonel 205 Rep 2,770 Posts Drives: E92 328i, E92 M3 Join Date: Sep 2009 Location: Houston, TX iTrader: (12) Garage List 2008 E92 328 [5.00]	I use 93 only because my car is tuned for it, but also because I don't mind spending $3 extra every week for the peace of mind. __________________
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02-29-2012, 11:59 AM	#22
onebadmofo Colonel 346 Rep 2,396 Posts Drives: 2008 E90 M3 Join Date: Aug 2010 Location: Central NJ iTrader: (14)	The price difference is like 10-20 cents per gallon, no? Skip on Starbucks next time and fiill your damn car up with 93.
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