Octane 89 or 91
- Thread starter COGS5150
- Start date
Always got premium in mine.
I do not think 89 versus 91 will make a big difference. I would just stay away from the discounted brands and chose a station with great debit, so you do not get old gas. Try to find also a station that had to change its tanks, so you will be sure that you do not get trash if you happen to have to get the bottom.
All major brands will have various gasoline treatment introduced in their products at the refineries, so expensive additives are not typically required.
I personnaly tank more at Shell or Chevron...
I do not think 89 versus 91 will make a big difference. I would just stay away from the discounted brands and chose a station with great debit, so you do not get old gas. Try to find also a station that had to change its tanks, so you will be sure that you do not get trash if you happen to have to get the bottom.
All major brands will have various gasoline treatment introduced in their products at the refineries, so expensive additives are not typically required.
I personnaly tank more at Shell or Chevron...
Boy this subject has been beat to death in the past, regardless welcome to the board and thanks for the question. Like frolf (Dan) said you should run the 91, however your ECU will compensate and in the long ruin over time you can damage your engine running the lower octane gas. And like gprion said buy quality gas, Chevron and Shell are both Top Tier gases.
why not?![[:D]](/images/smilies/biggrin.png "Big Grin [:D]")
I always like to go back to this thread:
http://www.bmwboard.com/forum/showthread.php?t=16245&highlight=octane
I always like to go back to this thread:
http://www.bmwboard.com/forum/showthread.php?t=16245&highlight=octane
It is all about performance and that is what BMW owners are looking for when we buy our cars, isn't it?
Everyone on this borad is talking about mods to bring 10-15% more power which would be negated by putting regular gas...????? It does not make sense...
Just my 2 cents...
Happy Driving
![[driving]](/images/smilies/icon_smile_driving.gif "Driving [driving]"){kind=icon}
did you read the article from that thread(provided below for convenience)? They used an E46 M3 for testing; that car suffered a 6.6% loss in "performance". They also noted that drivability did not suffer.
I'm not telling anyone what grade they should run; but the could/can run 87. Its entertaining how we get upset to even hear of the thought of running regular gas in a fellow BMW owner's car...
We should be more concerned with the absurd recommended oil change interval instead.
http://www.caranddriver.com/features/3604/regular-or-premium.html
I'm not telling anyone what grade they should run; but the could/can run 87. Its entertaining how we get upset to even hear of the thought of running regular gas in a fellow BMW owner's car...
We should be more concerned with the absurd recommended oil change interval instead.
http://www.caranddriver.com/features/3604/regular-or-premium.html