Gas Octane Increases E36 Performance! - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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#1 (permalink) Old 01-05-2005, 01:53 AM
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So I usually get 93 cause the Exxon at my girl friends house sells 87 for $2.05 89 for $2.15 and 93 for $2.25. As you all (who know me) know that my girl was away on vacation so I stopped driving to that Exxon and instead I've been pumping at a Sanex gas station on my way to work....The Sanex has 87 for $2.05, 89 for $2.15 and 91 for $2.20 and 93 for $2.29.

So ya'll know waht I was pumping!!! The 91 into my 318i for the last month or so I figured it was the same as the 93....

anyway yesterday went back to my girls place and pumped sme 93 from the Exxon and boy did my car take off!

All day today my acceleration and performance has been so much better than it was last month when I was on the road with 91!!!!

I figured my car was laggingin performace because I installed new tires that needed t be "broken in" as a friend told me and then my car would drive better!

Anyway it was the gas 93 is much better than 91!!!! Trust me PAY more for gas if ou want your car to drive better!!!!

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#2 (permalink) Old 01-05-2005, 02:45 AM
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mmm...good old 100 octane fuel. i love this country

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#3 (permalink) Old 01-05-2005, 07:03 AM
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Higher octane in an older car is desireable when the miles begin to rack up. New cars with all the on board electronics really only need what the manufacturer requires. Going to max octane on a brand new vehicle is basically a waste of money. Older higher mileage cars benefit from higher octane with respect to performance.
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#4 (permalink) Old 01-05-2005, 07:35 AM
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You should try 94. !!!

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#5 (permalink) Old 01-05-2005, 08:10 AM
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wow, gas is high in Brooklyn. I topped off last night with BP 93, and paid 1.87/gal for it. Gotta love that!

Every now and again (like a few times a year), I will run octane booster in the car, just to burn off any carbon build up, and yeah, that stuff REALLY makes a difference. But yes, always use the good stuff. It may be mostly psychological, but hell it's only a few cents a gallon, that's a small price to pay for peace of mind IMO.

BTW, like the new sig Delmarco!

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#6 (permalink) Old 01-05-2005, 09:06 AM
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Higher octane won't increase your performance only waste money, unless you have a turbo then it makes a difference.
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#7 (permalink) Old 01-05-2005, 09:39 AM
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Quote:
Originally posted by jllphan@Jan 5 2005, 08:10 AM
Every now and again (like a few times a year), I will run octane booster in the car, just to burn off any carbon build up, and yeah, that stuff REALLY makes a difference. But yes, always use the good stuff. It may be mostly psychological, but hell it's only a few cents a gallon, that's a small price to pay for peace of mind IMO.
[snapback]264721[/snapback]
Ah, where do you get octane booster? I recall my friend once getting something at a paint store that had a double use as an octane booster... but I'm not sure I'd trust that.
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#8 (permalink) Old 01-05-2005, 10:20 AM
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If you want a huge octane boost use a gallon of toluene or xylene per full tank. I am not sure, but i think toluene is 114 grade and xylene is 117 or something like that. Xylene is way more canerous though so wear some gloves. You can get either at a paint store like sherman williams or at home depot. Used with 91 or 93 this will bump up your point grade a lot. This is what most track and auto-x drivers do. Don't fill up your entire tank with the stuff because you won't be able to ignite and don't do it too often because it eats away at the rubber. Great injection cleaner though

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#9 (permalink) Old 01-05-2005, 10:31 AM
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Quote:
Originally posted by Live_the_Curves@Jan 5 2005, 10:06 AM
Higher octane won't increase your performance only waste money, unless you have a turbo then it makes a difference.
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I believe you are correct.
Higher octane does not mean it expands more, it means it resists premature combustion due to the heat and compression. (knocking)

I've noticed when I go to different stations and different chains where they buy the fuel from different distributers, sometimes I will get a great tank of gas that seems to give me 10-20 more HP than before. It's more noticeable between fillups when your tank is almost bone dry. Sometimes I get a crappy tank of gas, and don't go to that station for the next few weeks, by then they probably fill up their tanks again.

I think you guys have fallen victim of advertising. Permium gas isn't "premium"... it's just higher in octane.


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#10 (permalink) Old 01-05-2005, 01:26 PM
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91 around here is like 2,25 or higher! damn gas prices!! as for cars with higher mileage you car wont run as rough as it would if you put higher gas in it. they need it!

David
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#11 (permalink) Old 01-05-2005, 03:09 PM
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Quote:
Originally posted by jllphan@Jan 5 2005, 07:10 AM
wow, gas is high in Brooklyn. I topped off last night with BP 93, and paid 1.87/gal for it. Gotta love that!

Every now and again (like a few times a year), I will run octane booster in the car, just to burn off any carbon build up, and yeah, that stuff REALLY makes a difference. But yes, always use the good stuff. It may be mostly psychological, but hell it's only a few cents a gallon, that's a small price to pay for peace of mind IMO.

BTW, like the new sig Delmarco!
[snapback]264721[/snapback]
I've decided to set you on fire for having better gasoline than me for less money than I pay. I pay 2.09 for 91...


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#12 (permalink) Old 01-05-2005, 03:28 PM
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they don't even sell 91 octane at my local gas stations so i've ALWAYS been enjoying 93

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#13 (permalink) Old 01-05-2005, 03:43 PM
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Quote:
Originally posted by Tochenzo@Jan 5 2005, 03:28 PM
they don't even sell 91 octane at my local gas stations so i've ALWAYS been enjoying 93
[snapback]264941[/snapback]
Yeah 91 is a rare breed of octane in NYC. That Sanex on Atlantic Avenue is the only place I can remember seeing with 91 octane in the NY area. I've seen more places in Delware and Pennsylvania with 91 octane but no 93.

I've alway though once you go above 89 or 90 it would be the same but now I'm sticking with 93 cause the performance differences and fuel efficiency are so much better!

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#14 (permalink) Old 01-05-2005, 04:11 PM
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in CA 91 is the highest octane available

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#15 (permalink) Old 01-05-2005, 04:15 PM
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ive never seen 93, the only options i get are 87 89 91 used

of course i get 91

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