Which octane is best for the 3.0 petrol engine ?

Notices
 

Thread: Which octane is best for the 3.0 petrol engine ?

Reply to Thread
Page 1 of 2 12 LastLast
Results 1 to 10 of 15
  1. Which octane is best for the 3.0 petrol engine ? 
    #1
    Bimmer Fan
    Car Details
    yorkiemark's Car Details
    Model of Car:
    330i sport
    Year of Manufacture:
    2001
    Transmission Type:
    Automatic
    Car Body Type:
    saloon

    Join Date
    Sep 2012
    Location
    Rotherham
    Posts
    9
    Thanks
    2
    Thanked 0 Times in 0 Posts
    Hi all, what octane fuel do most of you run on the 3.0 straight 6 ? 2001 model. Book says 95 to 97. Are 98 and 99 a viable option or not ?
     
     

  2. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  3.  
    #2
    rm1
    rm1 is offline
    Dr of BMW
    Car Details
    rm1's Car Details
    Model of Car:
    325
    Year of Manufacture:
    1988
    Transmission Type:
    manual
    Car Body Type:
    coupe

    Join Date
    Mar 2011
    Location
    west midlands
    Posts
    1,326
    Thanks
    82
    Thanked 228 Times in 218 Posts
    best on high octane but don't expect much more mpg
     
     

  4.  
    #3
    Authorised Bimmerforums UK Vendor
    Car Details
    motechmike's Car Details
    Model of Car:
    e92 M3
    Year of Manufacture:
    2012
    Transmission Type:
    DTC
    Car Body Type:
    Coupe
    motechmike's Avatar
    Join Date
    Jan 2009
    Location
    Northampton
    Posts
    1,227
    Thanks
    378
    Thanked 209 Times in 182 Posts
    The ECU will advance the timing for the higher RON fuel.. it will help with response and loss of flat spots .

    I would use it all the time :-)
    Thanks Mike

    01604 810000
    07842 122467


    ECU mapping to a standard, not a price!

    www.motechperformance.co.uk
    info@motechperformance.co.uk

    facebook/motechperformance

    Performance Software: EcoMap | CityMap | ActiveMap | X-Maps & X-Maps +
    Tuning: Eibach | Vmaxx | Remus | Remus Powerizer | Jetex | Hawke | PiperCross | Forge | Carbon Speed
     
     

  5. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  6.  
    #4
    BMW Fanatic
    Car Details
    Kevin McNamara's Car Details
    Model of Car:
    330i SE
    Year of Manufacture:
    2003
    Transmission Type:
    Manual
    Car Body Type:
    Saloon

    Join Date
    Sep 2012
    Location
    Guildford
    Posts
    37
    Thanks
    0
    Thanked 5 Times in 5 Posts
    Shell Vmax every time for me.
     
     

  7.  
    #5
    BMW Crazed
    Car Details
    Doblo's Car Details
    Model of Car:
    e30 2.5 & e46 316ti coupe
    Year of Manufacture:
    old
    Transmission Type:
    manual
    Car Body Type:
    coupe
    Doblo's Avatar
    Join Date
    Nov 2011
    Location
    Herne bay kent, uk
    Posts
    108
    Thanks
    1
    Thanked 14 Times in 14 Posts
    Shell v power is well worth the extra pennies.
     
     

  8.  
    #6
    BMW Guru
    Car Details
    E36Coupe328's Car Details
    Model of Car:
    328 + 325
    Year of Manufacture:
    1995 + 1994
    Transmission Type:
    Manual
    Car Body Type:
    Coupe
    E36Coupe328's Avatar
    Join Date
    Jul 2010
    Location
    UK
    Posts
    2,974
    Thanks
    225
    Thanked 1,090 Times in 957 Posts
    HIgher octane is better only if the car can adjust it's timing accordingly. So if the limit of the cars management is an advance curve for 97RON them 98 or 99 RON will make your car slower


    No warranty of any kind implied or given and no liability for any loss, damage or injury, no matter how incurred accepted.

    Free Gas Kit* now fitted to free 328*

    *Based on ROI period exceeded
     
     

  9.  
    #7
    BMW Fanatic
    Car Details
    Kevin McNamara's Car Details
    Model of Car:
    330i SE
    Year of Manufacture:
    2003
    Transmission Type:
    Manual
    Car Body Type:
    Saloon

    Join Date
    Sep 2012
    Location
    Guildford
    Posts
    37
    Thanks
    0
    Thanked 5 Times in 5 Posts
    Vanos ?
     
     

  10.  
    #8
    Super Moderator
    Car Details
    payno's Car Details
    Model of Car:
    M3 Evo S Type R
    Year of Manufacture:
    1998 2003
    Transmission Type:
    Manual Auto
    Car Body Type:
    Coupe Saloon
    payno's Avatar
    Join Date
    Feb 2011
    Location
    birmingham city
    Posts
    9,226
    Thanks
    2,085
    Thanked 2,055 Times in 1,893 Posts
    Quote Originally Posted by Kevin McNamara View Post
    Vanos ?
    vanos controls cam timing not ignition timing which is done by the knock sensor but can take a few mls to swop from 95 - 99
     
     

  11.  
    #9
    BMW Fanatic
    Car Details
    Kevin McNamara's Car Details
    Model of Car:
    330i SE
    Year of Manufacture:
    2003
    Transmission Type:
    Manual
    Car Body Type:
    Saloon

    Join Date
    Sep 2012
    Location
    Guildford
    Posts
    37
    Thanks
    0
    Thanked 5 Times in 5 Posts
    Sorry I thought they where linked. Surely if the ECU detects Knock it would alter the cam timing as well? And if it does it would work in reverse when higher octane fuel is used. The way I understood it is that the ECU constantly try's to advance (to a degree) to gain best performance and the pulls back when it detects knock.
    Both my 330i's run better with shell Vpower and both Pink now and again on "normal" fuel.

    I find this very interesting and would like to know more.

    Cheers

    Kevin
     
     

  12.  
    #10
    Super Moderator
    Car Details
    payno's Car Details
    Model of Car:
    M3 Evo S Type R
    Year of Manufacture:
    1998 2003
    Transmission Type:
    Manual Auto
    Car Body Type:
    Coupe Saloon
    payno's Avatar
    Join Date
    Feb 2011
    Location
    birmingham city
    Posts
    9,226
    Thanks
    2,085
    Thanked 2,055 Times in 1,893 Posts
    Quote Originally Posted by Kevin McNamara View Post
    Sorry I thought they where linked.
    yes they are but vanos controls (via the ECU) when and how long the exhaust and inlet valves open / close
    the knock sensor(also via ECU) will determine at what point to fire the spark sooner for 95 ron and a bit later for 99 ron
     
     

Page 1 of 2 12 LastLast
Tags for this Thread

View Tag Cloud

Posting Permissions
  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts