Octane Question

Snowman811 · 10-04-2007, 11:35 AM

Anyone have working knowledge on using aftermarket additives to bump up the level of 91 octane? What does a higher octane do for cars in performance? 93 octane isn't available around the bay area, CA. I'm just correlating that Racing fuel is commonly 106 octane and I'm assuming this is for performance?

I know our engines are quite high compression, so a higher octane woul dlike run Ok - but I really don't know what I'm talking about. Just exploring and looking for a little education.

Thanks.

iatacs19 · 10-04-2007, 11:41 AM

It's a waste of money, there is no noticeable difference. Save your money for some beers.

Taittinger · 10-04-2007, 11:45 AM

Unless you are using JATO, do not bother.

Taittinger · 10-04-2007, 11:49 AM

I have only seen 93 here in NJ but my car was not noticeably affected when it had to settle for 91 in other states.

bartman32 · 10-04-2007, 12:35 PM

During ED I used 100 Octane at a gas station. Don't notice any difference. They said it would be better gas milage.

But it was all freeway driving for that trip anyway. Not sure if I see any different. I say save you money!

Gort · 10-04-2007, 02:02 PM

Quote:

Originally Posted by bartman32

During ED I used 100 Octane at a gas station. Don't notice any difference. They said it would be better gas milage.

But it was all freeway driving for that trip anyway. Not sure if I see any different. I say save you money!

That is 100 RON octane over there, not the same method of calculation.

10-04-2007, 11:35 AM	#1
Snowman811 Black Sapphire 330i 32 Rep 362 Posts Drives: Black Sapphire 330i Join Date: Feb 2006 Location: Nor Cal iTrader: (1)	Octane Question Anyone have working knowledge on using aftermarket additives to bump up the level of 91 octane? What does a higher octane do for cars in performance? 93 octane isn't available around the bay area, CA. I'm just correlating that Racing fuel is commonly 106 octane and I'm assuming this is for performance? I know our engines are quite high compression, so a higher octane woul dlike run Ok - but I really don't know what I'm talking about. Just exploring and looking for a little education. Thanks.
	Appreciate 0 Tweet Quote

10-04-2007, 11:41 AM	#2
iatacs19 Major General 461 Rep 5,319 Posts Drives: 2016 SO M4 Join Date: Sep 2006 Location: Washington, DC iTrader: (8)	It's a waste of money, there is no noticeable difference. Save your money for some beers. __________________ If only BMWCCA Referral: 385628
	Appreciate 0 Quote

10-04-2007, 11:45 AM	#3
Taittinger Major 57 Rep 1,019 Posts Drives: Monaco Blue E92 Join Date: Sep 2006 Location: NJ iTrader: (0) Garage List 2007 335i Cpe [0.00]	Unless you are using JATO, do not bother. __________________ '07 Monaco Blue 335i ordered 9/4 built 9/21 shipped 9/28 arrived 10/12 at dealership 10/18 vroom 10/19 christened 11/3...
	Appreciate 0 Quote

10-04-2007, 11:49 AM	#4
Taittinger Major 57 Rep 1,019 Posts Drives: Monaco Blue E92 Join Date: Sep 2006 Location: NJ iTrader: (0) Garage List 2007 335i Cpe [0.00]	I have only seen 93 here in NJ but my car was not noticeably affected when it had to settle for 91 in other states. __________________ '07 Monaco Blue 335i ordered 9/4 built 9/21 shipped 9/28 arrived 10/12 at dealership 10/18 vroom 10/19 christened 11/3...
	Appreciate 0 Quote

10-04-2007, 12:35 PM	#5
bartman32 Colonel 103 Rep 2,317 Posts Drives: F87 M2 Join Date: Feb 2007 Location: The OC iTrader: (0) Garage List 2017 M2 [0.00]	During ED I used 100 Octane at a gas station. Don't notice any difference. They said it would be better gas milage. But it was all freeway driving for that trip anyway. Not sure if I see any different. I say save you money!
	Appreciate 0 Quote