03-27-2011, 10:00 AM | #2 | |
TK-421
18
Rep 610
Posts |
Quote:
"Required fuel Super Premium Gasoline/AKI 91 or AKI 89 BMW recommends AKI 91 or 89. Gasoline with lower AKI The minimum AKI Rating is 89. If you use gasoline with this minimum AKI Rating, the engine may produce knocking sounds when starting at high outside temperatures. This has no effect on the engine life." In OR, our premium is 92. And that's what I use. Use 89 at your own risk. |
|
Appreciate
0
|
03-27-2011, 10:15 AM | #4 |
TK-421
18
Rep 610
Posts |
That's the safe bet. Some people will tell you that you only need to use premium if you have a turbo, but that's BS. Your car will thank you for it.
|
Appreciate
0
|
03-27-2011, 12:40 PM | #5 |
Lieutenant Colonel
45
Rep 1,876
Posts |
Use the highest available. This engine will appreciate it. Usually $1.75 difference per tank. If you can afford the car and a Morning latte, you can probably cover the $2 per tank. You get a bit better mileage, when you want to zip it zips better, and it burns a bit cleaner. But, if you wanna save about $104 dollars a year, then the lower grade is for you.
__________________
|
Appreciate
0
|
03-27-2011, 12:51 PM | #6 |
Pygocentrus Piraya
969
Rep 1,011
Posts
Drives: 2021 BMW X3MC
Join Date: Feb 2011
Location: Brooklyn, NY
|
I use 91 or 93...depending on which station I'm at.
__________________
kozzi
2021 BMW X3MC Donington Grey Metallic / Sakhir Orange & Black Extended Merino Leather / Aluminum Carbon Structure |
Appreciate
0
|
03-27-2011, 03:53 PM | #7 |
Colonel
647
Rep 2,292
Posts |
I use at least 91 in my BMWs, and used 94 in my previously owned M3.
__________________
2018 340i xDrive M Perf Edtn Sunset Orange
Previous BMWs - 19 others since 1971. |
Appreciate
0
|
03-27-2011, 04:11 PM | #8 |
Brigadier General
94
Rep 3,855
Posts |
Do you use the same RON octane ratings as the UK? Our premium is 97-99. Why is yours only 92?
Is that why we're paying so much more for our fuel over here?
__________________
F25 xDrive20d SE __ professional multimedia package | dynamic package | climate package | 309s | xline | xenons | electric seats | folding mirrors | business speakers |
Appreciate
0
|
03-27-2011, 06:16 PM | #10 |
Rider and driver
143
Rep 506
Posts |
RON=Research Octane Number. Basically, a calculated value. Generally a higher number
MOT=Motor OcTane. Variable compression head motor that is indexed to show real octane performance with an internal combustion engine. Generally a lower number. AKI= Anti-Knock Index. RON*MOT/2 (average) Method used in the U.S. 91 AKI is generally 95 RON, but as it depends on the MOT value, it could change. Nice way to advertise octane numbers, but keeps everyone in the dark as to what's really happening. If you hear knock, go to the next higher grade.
__________________
2021 X3 MC
I work for Keyser Söze |
Appreciate
0
|
03-28-2011, 08:29 AM | #13 |
Private
6
Rep 71
Posts |
Stopped at the local Mobil and had to go with 93 for the first fill up as 91 was not avialable. I did notice on the pump it said contains 10% ethanol. Even if it is 93 octane, should I stay away from that Mobil and the ethanol content as I noticed in the manual it says that? Thoughts?
|
Appreciate
0
|
03-28-2011, 08:42 AM | #14 |
Second Lieutenant
38
Rep 299
Posts |
Are F25's able to take Ethanol bend's? Here is Australia we generally only use 98 Ron for our BMW's. We are not able to use Ethanol blends.
|
Appreciate
0
|
03-28-2011, 10:46 AM | #16 |
Lieutenant
13
Rep 579
Posts |
Can you guys in the states even find non ethanol gas anymore? It's pretty much impossible to find stations without a "up to 10% ethanol" sticker on the pumps.
Also the price difference between the highest grade and lowest grade of gas is minuscule even if you add it up over a year. It's the same reason why I never understood people who buy a hybrid "for the fuel savings." The savings over using just a normal petrol or diesel engine takes years in order to recuperate the upfront costs of a hybrid. I can understand someone wanting to get a hybrid because it's better for the environment since they're burning less fossil fuel and price for fuel doesn't represent the true cost of production and harm towards the environment but not when someone buys it for the so called money savings. |
Appreciate
0
|
03-28-2011, 11:15 AM | #17 | |
Private
6
Rep 71
Posts |
Quote:
|
|
Appreciate
0
|
03-28-2011, 12:09 PM | #18 | |
Major
67
Rep 1,041
Posts |
Quote:
FYI - The actual amount of energy you purchase in a gallon of fuel: Diesel: 130,000 Btu/gal Gasoline: 115,000 Btu/gal. Gasoline/ethanol(10%) blend: 111,070 Btu/gal. Gasoline/ethanol (15%) blend: 109,105 Btu/gal. Current (Gasoline/ 10% ethanol) blends typically yield a 4 to 5% reduction in gas mileage compared to pure gasoline. The new “ 15% blend” will reduce mileage by approximately 6% minimum. The major contributor to the “Growth Energy” lobby is Archer Daniels Midland Co. The day after the ethanol regulations were changed to 15% ADM stock rose 2%. Coincidentally, exactly the same percentage that the new (15%) blend will cost consumers in the U.S. because of the reduced gas mileage they will be seeing. |
|
Appreciate
0
|
03-28-2011, 12:33 PM | #20 | |
Major
67
Rep 1,041
Posts |
Quote:
Anyway, I'm just stating the facts. Draw your own conclusions. |
|
Appreciate
0
|
03-28-2011, 04:18 PM | #21 | |
Major General
722
Rep 6,860
Posts
Drives: 2014 BMW 435i X-drive
Join Date: Jul 2008
Location: Reston, VA
|
Quote:
http://www.autoblog.com/2011/02/22/r...lock-e15-fuel/ |
|
Appreciate
0
|
03-29-2011, 12:39 AM | #22 | |
Major
67
Rep 1,041
Posts |
Quote:
Somehow, the notion of stretching auto fuel by raising food prices, and using more net energy to distill ethanol than it provides (even if that energy is from electricity) does not seem very smart from any point of view, except that of the grain companies who will turn a tidy profit. Last edited by Lotus7; 03-29-2011 at 01:07 AM.. |
|
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|