Octane Gas ?

shipill · 02-23-2007, 11:35 PM

I am using octane 87 for my 335 E92 !! I shouldnt use 87 or it is ok ?

Ninjaneer · 02-24-2007, 12:15 AM

You ought to use Premium grade octane... not sure what that is in Canada, but in the US we got 93, or 91 depending on the state.

RokX · 02-24-2007, 12:34 AM

I never put anything less than 91 in mine

Asiann · 02-24-2007, 12:39 AM

Use what is recomended and you won't have any problems with engine knocking.

TahoeOG · 02-24-2007, 08:03 AM

Quote:

Originally Posted by RokX

I never put anything less than 91 in mine

I never put anything less than 93 in mine

NFS13 · 02-24-2007, 08:09 AM

Quote:

Originally Posted by billmister

I never put anything less than 93 in mine

Isn't that a waste since BMW recommends 91?

SteveMD · 02-24-2007, 08:30 AM

Quote:

Originally Posted by shipill

I am using octane 87 for my 335 E92 !! I shouldnt use 87 or it is ok ?

Why? Did it sound like a good idea at the time?

MacAttack · 02-24-2007, 08:34 AM

Just go with the higher grade. Why risk it.

SteveMD · 02-24-2007, 08:46 AM

For the 335, 91 is recommended although the manual states 89 is OK.

All you're going to do is lose some power since the ECU will retard timing to prevent knocking. Seems a bit silly to me.

87 seems too low though. According to the manual, you may damage your engine. I can only assume that the ECU can't compensate for the knock at this low an octane.

I still don't understand why you would put in 87 gas on purpose.

ski360 · 02-24-2007, 09:47 AM

Stick to premium, Its a beautiful car why go with anything less

teknochild · 02-24-2007, 10:08 AM

Quote:

Originally Posted by SteveMD

Why? Did it sound like a good idea at the time?

he obiously wants to save some money, i meen the 250$ he would save over 50k miles is obviously worth a 10k$ engine

some people amaze me

i cant believe he didnt go for the gold and fill up on diesel, f-ing tool

David 12 · 02-24-2007, 10:10 AM

And do you guys also not recommend 10% ethanol blend? I think the Manual states that it is okay, but I have always stayed away from it.

Dave

Longboarder · 02-24-2007, 10:14 AM

Quote:

Originally Posted by David 12

And do you guys also not recommend 10% ethanol blend? I think the Manual states that it is okay, but I have always stayed away from it.

Dave

You are lucky because in Hawaii and California I have not found any gas without the 10% blend.

TahoeOG · 02-24-2007, 10:18 AM

Quote:

Originally Posted by NFS13

Isn't that a waste since BMW recommends 91?

I live in NJ, and i use shell.... Hence me putting in 93. their is 83 -89 -93.... I'm sure not going to use 89 on my 45K+ bmw. And even if their was 94+ octane i would stick with 93.

scottwww · 02-24-2007, 10:34 AM

In Idaho the highest octane pump gas is 91 unless you get it with 10% Ethanol. Then it is 93 octane. What is best to use (and why) when given this choice?

John 070 · 02-24-2007, 10:54 AM

87 is not OK for the 335, but it is OK for the 328.

The owner's manual states that 89 is the minimum for a 335, however, 91 is the recommended minimum. Why split hairs in a non-CA state? Just put the 93 in the tank.

There are many Japanese cars which like the 328, premium is recommended, but 87 is ok. The knock sensor can retard the timing. Again, 87 is not OK on a 335. 89 is the minimum.

Jaws · 02-24-2007, 11:09 AM

Quote:

Originally Posted by shipill

I am using octane 87 for my 335 E92 !! I shouldnt use 87 or it is ok ?

Have you read the manual? If not, please, for the sake of all us, do so.

stressdoc · 02-24-2007, 11:59 AM

I found thay my 335 runs slightly better (faster by .2 - .4 secs repeated tests 10 - 100 mph) on 93 than on 91. No idea why. It also seems to take awhile, i.e., 100 miles or so, for the transition. Is there an adaptive adjustment of the ECU?

Snecro · 02-24-2007, 12:05 PM

Quote:

Originally Posted by shipill

I am using octane 87 for my 335 E92 !! I shouldnt use 87 or it is ok ?

In Southern Ontario, my preferred gas is Sunoco 94 Octane. I've put in Shell's 91 V-power, which is claimed to be 'Top Tier'. Many prefer Shell, I've always liked Sunoco's 94 for my old turbo'd A4 and my 335i.

As others have said, it's well worth the extra $5 per fill-up for your CAD$60k car.

SteveMD · 02-24-2007, 12:38 PM

Quote:

Originally Posted by stressdoc

I found thay my 335 runs slightly better (faster by .2 - .4 secs repeated tests 10 - 100 mph) on 93 than on 91. No idea why. It also seems to take awhile, i.e., 100 miles or so, for the transition. Is there an adaptive adjustment of the ECU?

I suppose the ECU could advance the timing until it detects knock giving a little more power with 93. Remember there is no more energy in 93 than 91. The octane rating is simply a measurement of resistance to detonation (knock).

TahoeOG · 02-24-2007, 12:55 PM

Quote:

Originally Posted by SteveMD

Remember there is no more energy in 93 than 91. The octane rating is simply a measurement of resistance to detonation (knock).

Is this true? i thought otherwise

335iRacer · 02-24-2007, 12:58 PM

Don't put low octane gas in turbo cars! Thats what i have always been told.

02-23-2007, 11:35 PM	#1
shipill Major 412 Rep 1,287 Posts Drives: Macan S Join Date: Jan 2007 Location: Canada iTrader: (7)	Octane Gas ? I am using octane 87 for my 335 E92 !! I shouldnt use 87 or it is ok ?
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02-24-2007, 12:15 AM	#2
Ninjaneer Shadow Warrior 143 Rep 2,095 Posts Drives: '07 335i Sedan Join Date: Aug 2006 Location: Florida iTrader: (0)	You ought to use Premium grade octane... not sure what that is in Canada, but in the US we got 93, or 91 depending on the state. __________________ 335i E90 / Arctic / Gray / Burl Walnut / Steptronic / ZPP / ZSP / Paddles / CA / Nav / PDC / OEM Spoiler Mods: PIAA Angel Eyes, Rear Fog Switch, Escort X50 Blue hardwire, 30% Charcoal Llumar Installing soon: Rear Power Outlets (Happy Robot mod!)
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02-24-2007, 12:34 AM	#3
RokX '07 E92 335i SOLD 21 Rep 452 Posts Drives: '08 Jeep SRT8, SC'd '06 GTO Join Date: Nov 2006 Location: Denver CO iTrader: (0)	I never put anything less than 91 in mine __________________
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02-24-2007, 12:39 AM	#4
Asiann Got Seoul? 116 Rep 2,862 Posts Drives: 2012 535i MSport Join Date: Dec 2005 Location: Honolulu iTrader: (0) Garage List 2012 BMW 535i [0.00] 2008 750Li [0.00] 2006 BMW [0.00]	Use what is recomended and you won't have any problems with engine knocking. __________________ Can you say Alooooha? [SIGPIC][/SIGPIC]
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02-24-2007, 08:34 AM	#8
MacAttack Colonel 29 Rep 2,134 Posts Drives: fast enough Join Date: Nov 2006 Location: Afghanistan iTrader: (0) Garage List 2007 BMW [0.00]	Just go with the higher grade. Why risk it. __________________ 2007 E92 335i Coupe: Monaco Blue/Premium/Sports/Winter Package/Nav/CA/6MT/TT/Active Cruise/Active Steering/iPod/Rear Shade/Tint/Short Shifter/OEM Alum Pedals//
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02-24-2007, 08:46 AM	#9
SteveMD Colonel 198 Rep 2,485 Posts Drives: 2016 F10 535i MSport Join Date: Dec 2005 Location: Raventown! iTrader: (3)	For the 335, 91 is recommended although the manual states 89 is OK. All you're going to do is lose some power since the ECU will retard timing to prevent knocking. Seems a bit silly to me. 87 seems too low though. According to the manual, you may damage your engine. I can only assume that the ECU can't compensate for the knock at this low an octane. I still don't understand why you would put in 87 gas on purpose. __________________ 2006 E90 330i (retired) 2009 E90 335i (retired) 2012 E70 X5 50i M Sport (retired) 2016 F10 535i M Sport
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02-24-2007, 09:47 AM	#10
ski360 Second Lieutenant 25 Rep 251 Posts Drives: 325i Join Date: Sep 2006 Location: Germany (US) iTrader: (0)	Stick to premium, Its a beautiful car why go with anything less
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02-24-2007, 10:10 AM	#12
David 12 Major 129 Rep 1,048 Posts Drives: 2019 BMW X5 50i BSM, M Sport Join Date: Jan 2007 Location: Omaha iTrader: (0)	And do you guys also not recommend 10% ethanol blend? I think the Manual states that it is okay, but I have always stayed away from it. Dave
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02-24-2007, 10:34 AM	#15
scottwww Brigadier General 536 Rep 4,760 Posts Drives: 07 BMW 335i, 15 Infiniti Q60S Join Date: Dec 2006 Location: USA iTrader: (0)	In Idaho the highest octane pump gas is 91 unless you get it with 10% Ethanol. Then it is 93 octane. What is best to use (and why) when given this choice? __________________ 2007 BMW 335i E92, Montego Blue on Cream Beige, MT, ZSP, ZPP, CA, PDC, CWP and Style 188 for winter
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02-24-2007, 10:54 AM	#16
John 070 Lieutenant General 1707 Rep 14,829 Posts Drives: 335i cpe Join Date: Oct 2006 Location: ZSP/ZPP/ZCW iTrader: (0)	87 is not OK for the 335, but it is OK for the 328. The owner's manual states that 89 is the minimum for a 335, however, 91 is the recommended minimum. Why split hairs in a non-CA state? Just put the 93 in the tank. There are many Japanese cars which like the 328, premium is recommended, but 87 is ok. The knock sensor can retard the timing. Again, 87 is not OK on a 335. 89 is the minimum.
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02-24-2007, 11:59 AM	#18
stressdoc Moderator 618 Rep 10,858 Posts Drives: BMW i8; Toy 4runner TRD pro Join Date: Jun 2005 Location: Waco TX iTrader: (0)	I found thay my 335 runs slightly better (faster by .2 - .4 secs repeated tests 10 - 100 mph) on 93 than on 91. No idea why. It also seems to take awhile, i.e., 100 miles or so, for the transition. Is there an adaptive adjustment of the ECU? __________________ My recent ED photos: http://f80.bimmerpost.com/forums/sho....php?t=1026808 my not-so-recent ED: http://www.e90post.com/forums/showthread.php?t=31829 Please join BMWCCA http://bmwcca.org/index.php?pageid=c...&ref_by=300279
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02-24-2007, 12:58 PM	#22
335iRacer Bmw Hopefull 0 Rep 6 Posts Drives: 335i (05/07) Join Date: Jul 2006 Location: Volusia County, FL iTrader: (0)	Don't put low octane gas in turbo cars! Thats what i have always been told.
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