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F10 / F11 (2011 - Current)
The new chapter in the highly successful story of the BMW 5 Series Sedan (F10) and wagon (F11)

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  #101  
Old 04-27-2012, 05:17 AM
DavidZ DavidZ is offline
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My wife had my car last weekend on a road trip and she filled up with regular gas. Haven't noticed any decrease in performance--if anything, the car runs smoother. But there is a noticable drop in MPGs. I'm back to premium at my next fill up.
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  #102  
Old 04-27-2012, 05:46 AM
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Stealth.Pilot Stealth.Pilot is offline
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  #103  
Old 04-27-2012, 06:32 AM
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Recent customers at the Marathon gas station at 2275 Buford Highway near Atlanta were treated to a fill of diesel from the premium pumps
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  #104  
Old 04-27-2012, 07:17 AM
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Needsdecaf Needsdecaf is offline
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Quote:
Originally Posted by laser View Post
Recent customers at the Marathon gas station at 2275 Buford Highway near Atlanta were treated to a fill of diesel from the premium pumps
Oooooh, that's gotta smart.

That's one expensive insurance claim for that distributor.
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Heaven is where the police are British, the cooks are French, the cars are German, the lovers are Italian and it is all organised by the Swiss.

Hell is where the police are German, the cooks are English, the cars are French, the lovers are Swiss, and it is all organised by the Italians
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  #105  
Old 04-27-2012, 11:59 AM
Baquir Baquir is offline
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That's why I don't use marathon or Thorntons
Shell for me all the way!
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  #106  
Old 04-27-2012, 12:04 PM
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DreamCar DreamCar is offline
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Hmm may be its just me... for some reason Shell is a big no no for me... BP get the best out of my cars!...
I tested them again in my F10 same thing... may be its just a placebo effect i dont know but with BP it runs very smooth and responsive ... too much jerky feeling with shell

Last edited by DreamCar; 04-27-2012 at 12:05 PM.
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  #107  
Old 04-27-2012, 12:43 PM
Baquir Baquir is offline
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Thanks for the feedback. I ll try BP and see how it works
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  #108  
Old 04-27-2012, 12:47 PM
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Needsdecaf Needsdecaf is offline
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You guys do realize that all the gas is the same, it's just got different detergents in it, right?
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2011 535i
Sophisto Grau / Oyster - Black Nappa, Anthracite Wood Gone but not forgotten.

Heaven is where the police are British, the cooks are French, the cars are German, the lovers are Italian and it is all organised by the Swiss.

Hell is where the police are German, the cooks are English, the cars are French, the lovers are Swiss, and it is all organised by the Italians
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  #109  
Old 04-27-2012, 12:58 PM
Baquir Baquir is offline
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Quote:
Originally Posted by Needsdecaf View Post
You guys do realize that all the gas is the same, it's just got different detergents in it, right?
With some detergents better than others?
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  #110  
Old 04-27-2012, 12:59 PM
binone binone is offline
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I always put Shell V-Power (91). I notice the fuel door actually says minimum 89. My previous X5 said minimum 91 on the fuel door.

I used to put Sunoco 93 (now Petro Canada) in my X5, but turns out that the extra octane rating is derived from adding ethanol. Shell V-Power has zero ethanol. I find that the BMW engines run better with fuels that have no ethanol.
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  #111  
Old 04-27-2012, 01:58 PM
Baquir Baquir is offline
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BMW fuel requirement from F10 manual

I just thought it would be interesting to see what BMW says about it in the manual and I was surprised.

Take a look at the attachment.
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  #112  
Old 04-27-2012, 02:01 PM
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DreamCar DreamCar is offline
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Quote:
Originally Posted by Baquir View Post
I just thought it would be interesting to see what BMW says about it in the manual and I was surprised.

Take a look at the attachment.
Hmm thats interesting! So its not just my placebo effect?
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  #113  
Old 04-27-2012, 02:41 PM
binone binone is offline
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That is very interesting. No BP in Canada so do not know their fuel makeup. I wonder how much if any ethanol BP has in their fuels and if that is why BMW recommends BP. Shell in Canada says zero ethanol for V-Power right on the pump.

I will check the Canadian car manual and see if there is a similar recommendation.
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  #114  
Old 04-27-2012, 03:49 PM
Sanjaygb Sanjaygb is offline
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I've been using Costco 91 gas in my 335i since August and felt the engine getting progressively worse over time. Switched over to Chevron 91 a few days ago... and I'm convinced that it's much superior to Costco 91. The engine is quieter when idling, and the engine's much smoother on the freeway. The reason I switched is because the car would shake quite a bit at startup. Read on here that gas could be the problem. The shaking has gone now too.
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  #115  
Old 04-27-2012, 04:00 PM
snowboardjoe snowboardjoe is offline
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Quote:
Originally Posted by Sanjaygb View Post
I've been using Costco 91 gas in my 335i since August and felt the engine getting progressively worse over time. Switched over to Chevron 91 a few days ago... and I'm convinced that it's much superior to Costco 91. The engine is quieter when idling, and the engine's much smoother on the freeway. The reason I switched is because the car would shake quite a bit at startup. Read on here that gas could be the problem. The shaking has gone now too.
My partner and I noticed the same thing. I went with two tanks of the Costco fule and we noticed the power response was different. Totally drivable and it still delivered acceleration, but just not as much pep. Switched to Shell and BP and pep was back. I won't go to Costco anymore for fuel.
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  #116  
Old 04-27-2012, 05:35 PM
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Needsdecaf Needsdecaf is offline
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Quote:
Originally Posted by Baquir View Post
With some detergents better than others?

Of course. But detergents won't make a difference in momentary running.
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2011 535i
Sophisto Grau / Oyster - Black Nappa, Anthracite Wood Gone but not forgotten.

Heaven is where the police are British, the cooks are French, the cars are German, the lovers are Italian and it is all organised by the Swiss.

Hell is where the police are German, the cooks are English, the cars are French, the lovers are Swiss, and it is all organised by the Italians
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  #117  
Old 04-27-2012, 05:38 PM
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Needsdecaf Needsdecaf is offline
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Quote:
Originally Posted by binone View Post
That is very interesting. No BP in Canada so do not know their fuel makeup. I wonder how much if any ethanol BP has in their fuels and if that is why BMW recommends BP. Shell in Canada says zero ethanol for V-Power right on the pump.

I will check the Canadian car manual and see if there is a similar recommendation.
Adding ethanol or other oxygenates is not related to any specific manufacturer. It is related to the region in which it is sold.
__________________
2011 535i
Sophisto Grau / Oyster - Black Nappa, Anthracite Wood Gone but not forgotten.

Heaven is where the police are British, the cooks are French, the cars are German, the lovers are Italian and it is all organised by the Swiss.

Hell is where the police are German, the cooks are English, the cars are French, the lovers are Swiss, and it is all organised by the Italians
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  #118  
Old 12-23-2012, 03:30 PM
dpwr dpwr is offline
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my real world test results, just did full tank with 87 recently and I get exact same mileage as with 89 and 91... I also don't notice any difference in power, nothing is knocking, everything runs as smooth as it can be... draw your on conclusions
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  #119  
Old 12-23-2012, 04:24 PM
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Slaymaster Slaymaster is offline
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I buy the cheapest gas I can find using my GasBuddy app. Gas is gas!


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  #120  
Old 12-23-2012, 04:28 PM
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AutoUnion AutoUnion is online now
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Quote:
Originally Posted by dpwr View Post
my real world test results, just did full tank with 87 recently and I get exact same mileage as with 89 and 91... I also don't notice any difference in power, nothing is knocking, everything runs as smooth as it can be... draw your on conclusions
Do you have a N52 528i or N20 528i?

If you have a N52 528i, I can believe you. The 328 loaners are the dealer always are filled with 87 and they seem to run fine.

The high compression, turbo 2.0T though? Runs like **** on 87
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  #121  
Old 12-24-2012, 09:43 AM
roy528 roy528 is offline
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You can feed it 91 and above and be perfectly fine.
There are knock sensors that will retard your timing
and do some other things when they sense pre-ignition ( knock)
when you use lower octane gas. But don't use 87 !
In a naturally aspirated motor you can feed it almost anything and
with knock sensors it will be fine .
However when you do this you lose power and have to push the
motor harder negating much of your savings by using the lower grade
87-89 octane gas.
HOWEVER in a TURBO - I would not use anything below 91.
Your power production will suffer dramatically and you just don't want
today's high compression turbo motors struggling with less octane than
they need. Back in the day before computers et al a turbo motor would have
a low compression ratio 7 or 8 to 1 on average. Today
the compression ration is pretty high- which is why we are seeing
such high power being wrung from these relatively small turbo motors.
Bottom line -no less than 91 for a turbo motor. If you chose to drive
a turbo BMW- feed it what it needs to get what you paid for from
the car. Cheers
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  #122  
Old 12-24-2012, 12:40 PM
dpwr dpwr is offline
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turbo 4

Quote:
Originally Posted by AutoUnion View Post
Do you have a N52 528i or N20 528i?

If you have a N52 528i, I can believe you. The 328 loaners are the dealer always are filled with 87 and they seem to run fine.

The high compression, turbo 2.0T though? Runs like **** on 87
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  #123  
Old 12-25-2012, 07:01 AM
The X Men The X Men is online now
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Quote:
Originally Posted by dpwr View Post
turbo 4
If you lease your BMW, then who cares, let the next owner worry about it. If you plan to keep it for a long time, use the factory recommanded octane.
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  #124  
Old 12-25-2012, 07:58 AM
Art234 Art234 is offline
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I use either Mobil, Sunoco, BP or Gulf 93 octane here in NY. I had to put one tank of 87 in the car (actually half) as a result of the Sandy nonsense, but now we're fully back on a 93 octane diet. I notice very little difference in performance.

Merry Christmas all.
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  #125  
Old 12-25-2012, 08:04 AM
brunke brunke is offline
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Hype

I ran a 2000 Jetta for 140,000 miles and tried different grade fuels with no perceptable change - a dealer mechanic said it was a great idea because he would get paid to clean my injectors - never happened. My Harley calls for 93 - it burns 87 fine. The BMW doesn't seem to know the difference - we put 70K on it. If a modern vehicle with electronic systems can't adapt to different fuels (winter grade, summer grade, etc), fix it, jumk it or trade it.
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