Fuel Grade????

[bmw328iblack]

The previous owner of my 328i bmw drove it 100 k on 87 octang gas, now that I realize it needs a higher grade of gas for maximum performance i am using it. Is this ok to switch like that and How much faster will my car be if im using 93 octang as opposed to 87 octane gas? Will I get my moneys worth??? Also is 93 what I should be using or should I use 91 ??? thanks

[zibby]

Originally posted by bmw328iblack@Jul 16 2005, 01:00 AM
The previous owner of my 328i bmw drove it 100 k on 87 octang gas, now that I realize it needs a higher grade of gas for maximum performance i am using it. Is this ok to switch like that and How much faster will my car be if im using 93 octang as opposed to 87 octane gas? Will I get my moneys worth??? Also is 93 what I should be using or should I use 91 ??? thanks

[snapback]362701[/snapback]

91 is OK ! -that is what BMW recommends.

[bmw328iblack]

is 93 going to hurt my car at all or even make it any faster???? because I dont know if the pump I go to has 91 .... is 91 going to be better then 93???

[zibby]

Originally posted by bmw328iblack@Jul 16 2005, 12:14 PM
is 93 going to hurt my car at all or even make it any faster???? because I dont know if the pump I go to has 91 .... is 91 going to be better then 93???

[snapback]362777[/snapback]

It is nothing wrong to fill up with 93, it will not hurt your car and will not make your car faster, the diff. you will notice will be in bank account- ha ,ha, ha ! but do not fill up anymore with 87- everything above is just right . Zibby.

[drz]

MOst of the places around here have 93 instead of 91. I get 91 whenevr I can because getting any higher than the recommended is no better (it won't hurt you r car, though).

[icwhite]

You can also get away with 89 octane. Most gas places have 89 octane as their mid-grade. The dealer that sold me my car said it was okay to put 89 octane in but not the regular grade of 87. Doesn't seem like a lot of difference to me, but I go back and forth between 89 octane and 93 octane. It's hard to find a station with mid-grade gas at 91 octane.

With gas prices the way they are and probably will be for the rest of our lives, mid-grade is the way to go.

[twtmrtbmw]

Originally posted by bmw328iblack@Jul 16 2005, 01:00 AM
The previous owner of my 328i bmw drove it 100 k on 87 octang gas, now that I realize it needs a higher grade of gas for maximum performance i am using it. Is this ok to switch like that and How much faster will my car be if im using 93 octang as opposed to 87 octane gas? Will I get my moneys worth??? Also is 93 what I should be using or should I use 91 ??? thanks

[snapback]362701[/snapback]

New here so don't mean to be butting in....
The reason for using higher octane fuel in your bimmer is to keep away from knocking, pinging (timing retard)...

It don't bode well for your engine if you end up burning a piston top or valve....

You can use 89 octane if you can't find anything else, but 91 or higher is best for your engine's performance. Definitely don't use 87 octane....

[zibby]

Originally posted by twtmrtbmw+Jul 20 2005, 09:44 PM--><div class='quotetop'>QUOTE(twtmrtbmw @ Jul 20 2005, 09:44 PM)</div><div class='quotemain'><!--QuoteBegin-bmw328iblack@Jul 16 2005, 01:00 AM
The previous owner of my 328i bmw drove it 100 k on 87 octang gas, now that I realize it needs a higher grade of gas for maximum performance i am using it.* Is this ok to switch like that and How much faster will my car be if im using 93 octang as opposed to 87 octane gas?* Will I get my moneys worth???* Also is 93 what I should be using or should I use 91 ??? thanks

[snapback]362701[/snapback]

New here so don't mean to be butting in....
The reason for using higher octane fuel in your bimmer is to keep away from knocking, pinging (timing retard)...

It don't bode well for your engine if you end up burning a piston top or valve....

You can use 89 octane if you can't find anything else, but 91 or higher is best for your engine's performance. Definitely don't use 87 octane....

[snapback]363952[/snapback]

[/b][/quote]
Actually BMW cars are equiped with antiknock sensors , so even if you fill with 87, you will not notice any pinging or knocking ,but definitely you will notice , that car accelerate slower and is "lazy", still I do not recommend regular gasoline for E46 1999 and up.BTW ,when you use regular on those engines ,they run hotter, than on supreme gasolines; which is no good!

[Hootie361]

Practical experience:

I spent one month each on 87, 89, and 91 octane. The 87 gives a NOTICEABLE reduction in engine response. There was no apparent difference between the 89 and 91.

The owners manual may say 91, but that's 91 European grade, which is equivalent to 89 US grade.

[bmw328iblack]

so I should be all set using 89 grade??? its that or 93 octane where I live no 91 so what's the verdict which should I use?

[NESS]

I use 93 only in my 95 325. I heard running higher grade octane can also create some problems, but the benefits outweigh it I guess. I say stick with 91 and 93 and if your that tight on cash get 89.

[zibby]

Originally posted by bmw328iblack@Jul 23 2005, 01:33 PM
so I should be all set using 89 grade??? its that or 93 octane where I live no 91 so what's the verdict which should I use?

[snapback]364638[/snapback]

If I were you , I would go for 93 ! unless you can not afford this grade (I doubt it- you drive a Bimmer !)

[Zapak4eva]

the sales rep at the bmw dealership here in town told me a bmw representative told her that the fuel grade really does not matter and then she tried expain to me that i should use the lower grade fuel right before winter when they gas stations start using a different type of gas because it cleans out the system or something. I think she is crazy

[Hootie361]

She's not crazy. Companies add different additives to the gas during different seasons. When was the last time BP required "Fuel-line Freeze-up Protection" in July?

Stick with the 89. Only use 91+ if your car is chipped for performance.

[bmw328iblack]

Stick with the 89. Only use 91+ if your car is chipped for performance.

[snapback]365044[/snapback]

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Why do you suggest 89 I dont understand