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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 02-02-2009, 12:00 PM
mwpepper mwpepper is offline
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Mein Auto: 2008 E90 335i
91 vs 93 octane fuel

I will be taking a trip in my new '08 335 in March. I will be touring the south east. Georgia, South Carolina, Florida, Alabama, ect.
My question is how available is 93 octane fuel? My only selection here in town is a couple of BP stations. If I pull into a station that only has 91, should I leave and look for another?
Or just bite the bullet and fill it up with 91? This car will never see 89 as long as I own it. I also am not one to fill up with the cheapest stuff around either.
Thoughts?
Mike
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  #2  
Old 02-02-2009, 12:12 PM
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Gig103 Gig103 is offline
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Out west, 93 isn't an option anywhere, so don't worry about it. But if you are going to worry, use one of these stations:

http://www.toptiergas.com/retailers.html
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  #3  
Old 02-02-2009, 12:13 PM
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91 is all that's available in CA, & it runs fine with it.

Good luck/
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  #4  
Old 02-02-2009, 12:58 PM
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kp335i kp335i is offline
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91 is the only available gas here too... (montreal, canada). i wouldn't worry about it - but would use no less than 91.
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  #5  
Old 02-02-2009, 02:03 PM
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Wish we can get 93 here in Cali!
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  #6  
Old 02-02-2009, 02:08 PM
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bkmk5 bkmk5 is offline
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I only use 93. Simply because its most often cheaper than 91 elsewhere. BJ's gas FTW. BJ's only offers 87 and 93. (yes, BJs wholesale food store has gas stations too )
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  #7  
Old 02-02-2009, 02:23 PM
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jaaX3 jaaX3 is offline
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85 is offered here in CO! WTF? Does it have something to do with the elevation up here?
I use 91 (highest I've seen here).
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  #8  
Old 02-02-2009, 02:24 PM
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johnc_22 johnc_22 is offline
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Quote:
Originally Posted by mwpepper View Post
I will be taking a trip in my new '08 335 in March. I will be touring the south east. Georgia, South Carolina, Florida, Alabama, ect.
My question is how available is 93 octane fuel? My only selection here in town is a couple of BP stations. If I pull into a station that only has 91, should I leave and look for another?
Or just bite the bullet and fill it up with 91? This car will never see 89 as long as I own it. I also am not one to fill up with the cheapest stuff around either.
Thoughts?
Mike
93 is readily available in Georgia and Alabama (gas shortages due to buying panics, seasonal fuel changeover, etc notwithstanding) and I would assume the rest of the southeast.

I'll alert the authorities to your pending arrival.
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  #9  
Old 02-02-2009, 03:06 PM
twindaddy twindaddy is offline
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Yes, elevation is exactly right. I used to live in Colorado Springs, so I looked into it once. The higher the elevation, the lower the octane you need.
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  #10  
Old 02-02-2009, 03:08 PM
twindaddy twindaddy is offline
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I use 91 here in the southeast at sea level, it works fine. I thought I saw something in the BMW manual about lower octanes being ok, although lower octanes may be more likely to cause knocking when it is hot outside. In any event, a lower octane fuel will not cause engine damage, even if there is knocking, even over long term use.
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  #11  
Old 02-02-2009, 09:37 PM
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tturedraider tturedraider is offline
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Quote:
Originally Posted by mwpepper View Post
I will be taking a trip in my new '08 335 in March. I will be touring the south east. Georgia, South Carolina, Florida, Alabama, ect.
My question is how available is 93 octane fuel? My only selection here in town is a couple of BP stations. If I pull into a station that only has 91, should I leave and look for another?
Or just bite the bullet and fill it up with 91? This car will never see 89 as long as I own it. I also am not one to fill up with the cheapest stuff around either.
Thoughts?
Mike
The engine is designed to run on 91 octane and it will do that just fine.

Quote:
Originally Posted by jaaX3 View Post
85 is offered here in CO! WTF? Does it have something to do with the elevation up here?
I use 91 (highest I've seen here).
Quote:
Originally Posted by twindaddy View Post
Yes, elevation is exactly right. I used to live in Colorado Springs, so I looked into it once. The higher the elevation, the lower the octane you need.
90 octane frequently is the highest available at higher elevations (those above roughly 4k feet. 90 octane is the standard premium grade even on the high plains of Texas).
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  #12  
Old 02-03-2009, 07:09 AM
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need4speed need4speed is offline
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You won't have any problem finding 93 in South Carolina. Enjoy your trip.
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  #13  
Old 02-03-2009, 09:25 AM
Swamp55 Swamp55 is offline
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93 octane is available everywhere in Florida as well.
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  #14  
Old 02-03-2009, 01:52 PM
RambleJ RambleJ is offline
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Yah here in CA we aren't priveledged enough for anything higher than 91.. Our cars run fine on it. Although I do like to add a couple gallons of 100 to top it off every now and then!
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  #15  
Old 02-03-2009, 02:36 PM
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E92-Lighting E92-Lighting is offline
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Quote:
Originally Posted by RambleJ View Post
Yah here in CA we aren't priveledged enough for anything higher than 91.. Our cars run fine on it. Although I do like to add a couple gallons of 100 to top it off every now and then!
anyone of any places higher than 91 in so cal?
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  #16  
Old 02-03-2009, 02:55 PM
RambleJ RambleJ is offline
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There was one in Phillips Ranch, but that 76 closed down a couple weeks ago. But there is another 76 that sells 100 at the pump in Covina.. its on Citrus right off of the 10.
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  #17  
Old 02-04-2009, 11:36 AM
JStyres JStyres is offline
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93 is readily available in big cities in Mississippi, where I live.
I get 93 regularly at Chevron, Shell, BP ....
I guess we are just closer to Gulf of Mexico and Texas refineries.
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  #18  
Old 02-04-2009, 02:14 PM
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westwest888 westwest888 is offline
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Quote:
Originally Posted by bkmk5 View Post
BJ's only offers 87 and 93. (yes, BJs wholesale food store has gas stations too )
To get midgrades or 89 or 91, stations simply blend 87 and 93 while you pump it. There are often only two tanks in the ground. Ditto for stations that sell 87-89-91.

Some Sunoco stations in NJ sell "Ultra 94".

To answer the OP, the south sells 93 all over. Just make sure you fill up when you see a station. Some of those areas are VERY rural. So rural that satellite radio doesn't work (it needs terrestrial repeaters). I went to Road Atlanta and sometimes I wouldn't see a station for 30 miles. It was hurricane season so 2/3 of them were closed because they ran out of gas. It was a bad situation and when I did find gas I paid $4.75.

Last edited by westwest888; 02-04-2009 at 02:17 PM.
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  #19  
Old 02-04-2009, 02:34 PM
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bkmk5 bkmk5 is offline
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Quote:
Originally Posted by westwest888 View Post
To get midgrades or 89 or 91, stations simply blend 87 and 93 while you pump it. There are often only two tanks in the ground. Ditto for stations that sell 87-89-91.

Some Sunoco stations in NJ sell "Ultra 94".
To answer the OP, the south sells 93 all over. Just make sure you fill up when you see a station. Some of those areas are VERY rural. So rural that satellite radio doesn't work (it needs terrestrial repeaters). I went to Road Atlanta and sometimes I wouldn't see a station for 30 miles. It was hurricane season so 2/3 of them were closed because they ran out of gas. It was a bad situation and when I did find gas I paid $4.75.
And in NY
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  #20  
Old 02-04-2009, 02:36 PM
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Go for top tier gas, like Shell or Chevron, and get their premium; 91 or 93 is pretty much the same in our cars.
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  #21  
Old 02-04-2009, 02:55 PM
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GinoDotCom GinoDotCom is offline
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How do you guys feel about octane boosters? i.e those they sell at auto stores. Will it benefit our engines if every now and then when we want to have some fun or run the track?

Thoughts?
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