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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 10-03-2007, 09:14 AM   #1
mbritojr
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Question Best Gas for a BMW?

Hey Everybody,

I dunno if this is a silly question or not but I've read about some whack things happening to BMW's on 89 octane so I thought I would ask: is there a "best fuel" for my car?

I know to use the best octane I can get, but is one brand better than the other? Does anyone know what octane and brand is most common in Germany? If so, what is the American equivalent?

I live in Rhode Island, USA which has a major fuel depot in the capital so I can get just about any gas within 20 miles of my house (from Hess 92 to Sunoco 94 to VP Racing 104). Because of convenience (and price) I go with Shell 93 most often. What are your thoughts?

Mike
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Old 10-03-2007, 09:22 AM   #2
joeski3d
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Fill it with premium which usually has a minimum 93 octane rating. As far as brands to go with? I've not heard of any conclusive evidence to support brand A over brand B. Octane is octane.
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Old 10-03-2007, 09:23 AM   #3
mechanic_101
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BMW requires 91 octane, but my local stations sell only 93. I normally buy gas at BP, it seems to run fine. My friend just handed me few gas pills and telling me these pills would help improving my fuel economy. I would not put these things in my gas tank...they smell like moth balls. Is there a gas pill out there?
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Old 10-03-2007, 09:30 AM   #4
idoc330ci
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just use at least 91 octane and you'll be fine.

i use shell v-power 93 octane
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Old 10-03-2007, 09:50 AM   #5
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Maybe its just me but my M3 doesn't like the Shell in my area. I think that VPower is useless.

I use Exxon or Valero and both feel very good.
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Old 10-03-2007, 10:02 AM   #6
blp88
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I've used 89 ever since I got the car new 3yrs ago. It runs fine..
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Old 10-03-2007, 10:02 AM   #7
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Quote:
Originally Posted by blp88 View Post
I've used 89 ever since I got the car new 3yrs ago. It runs fine..
Here we go again....
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Old 10-03-2007, 10:04 AM   #8
blp88
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Haha I've never responded to these threads but I guess today, I am in the mood!?
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Old 10-03-2007, 10:20 AM   #9
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Fuel is only to suppress the spark so it will cause the engine to run hotter or colder, at least thats what I was taught. With the knock sensors these days it is making a bigger difference in how your engine will perform. Also, here in houston, we have 10% enthonal in all fuels, and this is a attempt to push better efficiency. So your octanes and quality will vary depending on location, which would explain why some of us get away with different octanes. I use Shell V-Power always.
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Old 10-03-2007, 10:30 AM   #10
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www.toptiergas.com. PERIOD.
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Old 10-03-2007, 11:05 AM   #11
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+1
most important thing after that would be how new is the gas station, or the tanks at the gas station
old tanks won't give you as clean gasoline as newer tanks, and might clog up your fuel filter prematurely
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Old 10-03-2007, 11:25 AM   #12
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I'm pretty sure as long as you stay away from those discount gas stations, you'll be fine.

There once was a time when I was stupid and pumped half a tank from a discount station because I needed gas and didnt have plastic on me.

By the end of the tank, I fouled my plugs and had to replace them. MUCH cheaper to just pump top tier gas...
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Old 10-03-2007, 12:23 PM   #13
Knight2424
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91+ octane
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Old 10-03-2007, 12:27 PM   #14
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not sure if the rating system is different between US and AUstralia..

but we have 91 / 95 / 98 / 100 octane here...

100 octane being shell v-power racing...

i use 98 most of the time.
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Old 10-03-2007, 01:49 PM   #15
01330cifirstbmw
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yes please use gas...
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Old 10-03-2007, 02:22 PM   #16
idoc330ci
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yes please use gas...
ingenious.
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Old 10-03-2007, 05:16 PM   #17
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Old 10-03-2007, 05:26 PM   #18
Ho0k3d0nFoNiCs
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chevron
exxon
shell

93 octane

nothing else for me
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Old 10-03-2007, 05:45 PM   #19
viper2308
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You can use whatever octane you want. There is no MPG increase with higher octane, but your engine will recognize the lower octane and will cut power.
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Old 10-03-2007, 06:40 PM   #20
joe_da_cro
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shell V power 98 octane for me

does the trick i get over 800Km / 500mi on a tank in the city so it pays off

in australia the manual states 91 octane as min although all the performance figures are attained using 98 so i use 98
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