accidental 91 Premium gas put in....

135iPSU · 06-08-2009, 01:29 PM

I accidently put in $11 of 91 Premium gas into my tank, honestly wasnt paying attention thats why i only put in about 3.5 gallons because it was then that i realized. Stopped, and putted around town until it was almost empty and filled it back up with 93 Ultra. Would my turbos have been hurt in anyway? I also put in a booster for the gas when i had the premium in, and didn't push the car at all. Did i act in the right way? I don't need any wow your a dumbass comments because yes it was accidental because i was talking to someone on the phone and honestly wasn't paying attention, so yes I am a dumbass. All I'm asking for is honest advice and comments.

oneintheory · 06-08-2009, 01:30 PM

Uhhh...

the car will run on 91. just fine, actually. fantastically, to be sure.

it will probably run alright on 89, too, minus a little knocking, but I wouldn't do it.

Now, with a tune, that's a different story.

My135 · 06-08-2009, 01:31 PM

No, the ECU should adjust accordingly. Our engine even work with 89 but power detuned.

Eddy@ApexWheels · 06-08-2009, 01:47 PM

91 is the highest you get in CA, the car is tuned for all 50 states. So the 93 is a bonus to you. All new cars have knock sensors and will begin to detune themselves. If you were ever stranded you could even run lower octane without issue if you kept the rpm's down and didn't go to a track day

(you'll only really get knocking at higher rpm's)

I've been throwing 87 into my 540 for years, and every shop I talk to agrees there is no issue. Turbo'd cars are a little different though. But the point is 91 is fantastic for your car

jkp1187 · 06-08-2009, 01:48 PM

I ran European-rated 95 octane in my 135i while in Europe (which, according to the standard repository for all knowledge and wisdom known as the Wikipedia, is equivalent to American-rated 90-91 octane.) Absolutely no problems in 600 miles of driving. For the record, the Euro-rated 95 (i.e., 90-91 octane US) is what the guy at the BMW Welt recommended I use. Like the guy above said, per the owner's manual, you're fine. 89 octane (US) is the bare minimum recommended per BMW (but that will come with a slight performance hit.)

Ahh, to be in Happy Valley again, and have time to just drive around, burning gas....

jeremyc74 · 06-08-2009, 01:53 PM

You could run 87 in these cars day in and day out and it wouldn't cause any damage. It would reduce performance, but it wouldn't hurt anything.

halcon1 · 06-08-2009, 01:53 PM

You wont have a problem at all.

91 is just fine, even 87 is fine if you live at higher altitude - its higher volatility compensates for lack of oxygen. I live at 9,000 feet and people here put 87 in supercharged engines (MB 280 Kompressor, Audi Q7).

Setting aside a small lag in performance, 89 and 91 Octane are mechanically more than OK even at sea level. The important thing is that it's unleaded.

singular · 06-08-2009, 01:57 PM

I run 91 daily since, as someone else pointed out, that's pretty much the best that's available in California. No problems at all.

I occasionally mix in a few gallons of 100 octane racing fuel to give my car a treat.

kb2dhg · 06-08-2009, 02:07 PM

91 octain is what is reccomended? What is the problem?

KeithLM · 06-08-2009, 02:10 PM

As everyone else has said, 91 is just fine. Furthermore it's certainly not going to affect your turbos in any way whatsoever. Whatever made you think that? Also, there was no reason to burn the 91 up if you were worried about it, just add some 93 and you'll be running a mix of the two. The gas station may be mixing 93 with 87 to come up with 91 or any other blend based on their needs.

shodanusmc · 06-08-2009, 02:39 PM

What everyone else said. I once put 87 in by mistake and had no problem.

1ToBeOn2Wheels · 06-08-2009, 03:18 PM

I'm not from the south bay, and maybe there is someone who is who can clarify, but I thought parts of Silicon Valley (and some SoCal locations) have petrol stations with higher than 91 octane fuel?

I'd also like to point out that I think the OP is trying to rub in the fact that he has access to 93 octane..

x97Melbourne · 06-08-2009, 04:43 PM

Is this post a joke? BMW recommends 91 octane....why would this damage an engine?

Maybe this was a joke and I just don't get it. Its been known to happen.

M3Newbie88 · 06-08-2009, 04:48 PM

+1.. 91 octane is the reg gas you are supposed to put in.. the only time I put in 94 octane (highest in my province of Ontario Canada) is when I am running my Map 6 JB3 tune with mods lol.. I think this is a joke thread.

singular · 06-08-2009, 05:17 PM

Quote:

Originally Posted by 1ToBeOn2Wheels

I'm not from the south bay, and maybe there is someone who is who can clarify, but I thought parts of Silicon Valley (and some SoCal locations) have petrol stations with higher than 91 octane fuel?

I'd also like to point out that I think the OP is trying to rub in the fact that he has access to 93 octane..

I found one 76 station that carries 100 octane racing fuel (Almaden Expressway & Foxworthy in San Jose). There are probably others in the SF Bay Area.

Heinzftw · 06-08-2009, 06:18 PM

Dude 91 octane is all we have in California. Your fine!!

jeremyc74 · 06-08-2009, 06:50 PM

Quote:

Originally Posted by 1ToBeOn2Wheels

I'd also like to point out that I think the OP is trying to rub in the fact that he has access to 93 octane..

You may be right, but that would be pretty stupid considering that most of the entire country has access to 93 if you're paying attention to what you're getting.

It's not at every station here, but probably close to half, and you can always count on Shell to have 93.

yourfriend · 06-08-2009, 06:59 PM

Quote:

Originally Posted by jeremyc74

You may be right, but that would be pretty stupid considering that most of the entire country has access to 93 if you're paying attention to what you're getting.

It's not at every station here, but probably close to half, and you can always count on Shell to have 93.

but just because much of the united states has 93 octane doesn't change the fact that 91 is what bmw recommends... which means it could very well be a joke.

jeremyc74 · 06-08-2009, 07:20 PM

Quote:

Originally Posted by yourfriend

but just because much of the united states has 93 octane doesn't change the fact that 91 is what bmw recommends... which means it could very well be a joke.

I just meant that it was dumb to brag about something that many/most of us have access to.

justagp · 06-08-2009, 08:54 PM

Contrary to all the previous posters, I have to agree with your concern. Your car's engine is no doubt horribly damaged by your unfortunate error. However, out of the goodness of my heart I will offer to take your (now junk) car off your hands for a small salvage fee. Thousands wouldn't, but I will.

cagekicker · 06-08-2009, 10:05 PM

you'll be fine. the car can take 91 also but 93 is perfect.

KeithLM · 06-08-2009, 10:26 PM

Quote:

Originally Posted by justagp

Contrary to all the previous posters, I have to agree with your concern. Your car's engine is no doubt horribly damaged by your unfortunate error. However, out of the goodness of my heart I will offer to take your (now junk) car off your hands for a small salvage fee. Thousands wouldn't, but I will.

That's very kind of you. You are a braver and better person than I. I think he should take you up on your offer as he'll never feel confident in his car again.

06-08-2009, 01:29 PM	#1
135iPSU Enthusiast 11 Rep 272 Posts Drives: Join Date: Jun 2008 iTrader: (1) Garage List 2008 135i [0.00]	accidental 91 Premium gas put in.... I accidently put in $11 of 91 Premium gas into my tank, honestly wasnt paying attention thats why i only put in about 3.5 gallons because it was then that i realized. Stopped, and putted around town until it was almost empty and filled it back up with 93 Ultra. Would my turbos have been hurt in anyway? I also put in a booster for the gas when i had the premium in, and didn't push the car at all. Did i act in the right way? I don't need any wow your a dumbass comments because yes it was accidental because i was talking to someone on the phone and honestly wasn't paying attention, so yes I am a dumbass. All I'm asking for is honest advice and comments. __________________ Titanium Silver, Coral Red, Aluminum
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06-08-2009, 01:30 PM	#2
oneintheory no longer a BMW owner 152 Rep 1,463 Posts Drives: 2011 Ford Edge Sport Join Date: Jan 2009 Location: Suffolk/Chesapeake, VA iTrader: (0)	Uhhh... the car will run on 91. just fine, actually. fantastically, to be sure. it will probably run alright on 89, too, minus a little knocking, but I wouldn't do it. Now, with a tune, that's a different story.
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06-08-2009, 01:31 PM	#3
My135 Lieutenant Colonel 85 Rep 1,609 Posts Drives: Join Date: Mar 2008 iTrader: (0)	No, the ECU should adjust accordingly. Our engine even work with 89 but power detuned. __________________ 7/08 135 Coupe, Crimson Red, 6 SP, Sport, Taupe Lette/Aluminum. Performance Mods: JB4 on Map 5, BMS DP Fix V3, Injen polished intake, AR Catless DP, Maddad resonated mid-pipes, aFe exhaust polished tips, ST Suspension Coil Over and Hotchkis front sway bar. Others: BMS OCC, BT Scanner, Mud Flap. Next Mods: AA Front Strut Brace.
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06-08-2009, 01:47 PM	#4
Eddy@ApexWheels 445 Rep 1,658 Posts Drives: E30 M3, F10 M5 Join Date: Jun 2009 Location: Bay Area, CA iTrader: (6)	91 is the highest you get in CA, the car is tuned for all 50 states. So the 93 is a bonus to you. All new cars have knock sensors and will begin to detune themselves. If you were ever stranded you could even run lower octane without issue if you kept the rpm's down and didn't go to a track day (you'll only really get knocking at higher rpm's) I've been throwing 87 into my 540 for years, and every shop I talk to agrees there is no issue. Turbo'd cars are a little different though. But the point is 91 is fantastic for your car
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06-08-2009, 01:48 PM	#5
jkp1187 Unindicted co-conspirator 66 Rep 1,734 Posts Drives: to work, mostly. Join Date: Oct 2008 Location: Pittsburgh, Pennsylvania / Detroit, Michigan iTrader: (0)	I ran European-rated 95 octane in my 135i while in Europe (which, according to the standard repository for all knowledge and wisdom known as the Wikipedia, is equivalent to American-rated 90-91 octane.) Absolutely no problems in 600 miles of driving. For the record, the Euro-rated 95 (i.e., 90-91 octane US) is what the guy at the BMW Welt recommended I use. Like the guy above said, per the owner's manual, you're fine. 89 octane (US) is the bare minimum recommended per BMW (but that will come with a slight performance hit.) Ahh, to be in Happy Valley again, and have time to just drive around, burning gas....
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06-08-2009, 01:53 PM	#6
jeremyc74 Banned 76 Rep 5,970 Posts Drives: '08 135i Montego/Terra Join Date: Feb 2008 Location: Evansville, IN iTrader: (0)	You could run 87 in these cars day in and day out and it wouldn't cause any damage. It would reduce performance, but it wouldn't hurt anything.
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06-08-2009, 01:53 PM	#7
halcon1 Private 7 Rep 50 Posts Drives: 125i M Coupe Join Date: Apr 2009 Location: Colombia iTrader: (0)	You wont have a problem at all. 91 is just fine, even 87 is fine if you live at higher altitude - its higher volatility compensates for lack of oxygen. I live at 9,000 feet and people here put 87 in supercharged engines (MB 280 Kompressor, Audi Q7). Setting aside a small lag in performance, 89 and 91 Octane are mechanically more than OK even at sea level. The important thing is that it's unleaded.
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06-08-2009, 01:57 PM	#8
singular Captain 21 Rep 935 Posts Drives: BSM 135i ppk cab Join Date: Nov 2008 Location: SF Bay Area iTrader: (0)	I run 91 daily since, as someone else pointed out, that's pretty much the best that's available in California. No problems at all. I occasionally mix in a few gallons of 100 octane racing fuel to give my car a treat.
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06-08-2009, 02:07 PM	#9
kb2dhg Private First Class 3 Rep 138 Posts Drives: 2009 128i Join Date: May 2009 Location: Yonkers NY iTrader: (0)	91 octain is what is reccomended? What is the problem?
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06-08-2009, 02:10 PM	#10
KeithLM Proud 1er 24 Rep 699 Posts Drives: Crimson/Coral 135i Join Date: Apr 2008 Location: Wylie, TX iTrader: (0)	As everyone else has said, 91 is just fine. Furthermore it's certainly not going to affect your turbos in any way whatsoever. Whatever made you think that? Also, there was no reason to burn the 91 up if you were worried about it, just add some 93 and you'll be running a mix of the two. The gas station may be mixing 93 with 87 to come up with 91 or any other blend based on their needs. __________________ Stett Performance Charge Pipe with DDV, Cold-Air Intake, Front Mounted Intercooler, and Stage 1 Oil Cooler. I've recently moved my photos to Google's web albums. Photos can be found here, here, and here.
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06-08-2009, 02:39 PM	#11
shodanusmc Captain 21 Rep 774 Posts Drives: 09 135 Vert Join Date: Feb 2009 Location: Chicago burb iTrader: (0)	What everyone else said. I once put 87 in by mistake and had no problem.
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06-08-2009, 03:18 PM	#12
1ToBeOn2Wheels Freude am Fahren 31 Rep 703 Posts Drives: B9 Audi S5 Coupe Join Date: Oct 2007 Location: Sierra Nevada Foothills, California iTrader: (0)	I'm not from the south bay, and maybe there is someone who is who can clarify, but I thought parts of Silicon Valley (and some SoCal locations) have petrol stations with higher than 91 octane fuel? I'd also like to point out that I think the OP is trying to rub in the fact that he has access to 93 octane..
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06-08-2009, 04:43 PM	#13
x97Melbourne Molar World 47 Rep 916 Posts Drives: 2016 435i Coupe Join Date: Apr 2008 Location: Florida iTrader: (0)	Is this post a joke? BMW recommends 91 octane....why would this damage an engine? Maybe this was a joke and I just don't get it. Its been known to happen. __________________ Current: 2016 435i Coupe Previous: 2014 335i Sedan; 2013 328i Cv, 2011 335i Sedan Gone But Not Forgotten: 2008 135i Convertible (my favorite)
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06-08-2009, 04:48 PM	#14
M3Newbie88 Brigadier General 138 Rep 4,053 Posts Drives: E92 M3 Join Date: Jun 2008 Location: Canada iTrader: (5)	+1.. 91 octane is the reg gas you are supposed to put in.. the only time I put in 94 octane (highest in my province of Ontario Canada) is when I am running my Map 6 JB3 tune with mods lol.. I think this is a joke thread.
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06-08-2009, 08:54 PM	#20
justagp New Member 0 Rep 13 Posts Drives: 1987 M6, 2008 135i, 2010 X5D Join Date: Mar 2009 Location: Ontario, Canada iTrader: (0)	Contrary to all the previous posters, I have to agree with your concern. Your car's engine is no doubt horribly damaged by your unfortunate error. However, out of the goodness of my heart I will offer to take your (now junk) car off your hands for a small salvage fee. Thousands wouldn't, but I will.
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06-08-2009, 10:05 PM	#21
cagekicker Major 16 Rep 1,335 Posts Drives: '09 crimson red 135i Join Date: Nov 2008 Location: miami (vice city) fl. iTrader: (0)	you'll be fine. the car can take 91 also but 93 is perfect.
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