Unleaded vs Super Unleaded...

Discussion in 'Engine maintenance, upgrades and modifications' started by Wolsty, Nov 24, 2008.

  1. 12 Apr 2009 at 10:29 AM #81
    akita1

    akita1 Wearing official underwear

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    Uleaded v Super ? No contest after all you dont run a rolls on parafin ! Do You ? Bill.
     
  2. 13 Apr 2009 at 10:05 AM #82
    Billym3

    Billym3 Moderator

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    if we did run on parafin we'd be in petrol pump all the time
     
  3. 11 May 2009 at 11:28 PM #83
    DoZZa

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    Interesting thread this one.

    I live in North Devon and the local Tesco does not do Tesco99.
    And the nearest Shell garage is about 50 miles away.

    I currently drive a Subaru Legacy GT-B Twin Turbo, the fuel I use is Sainsbury's Super which is 97, and then add Millers Octane + booster, according to the label one bottle of Millers Octane + will add 2 RON to 50litres of fuel. So it should be around 99ron, my mrs put normal unleaded in once and the car hated every drop of it, I have a Knocklink installed and it showed a lot of knock when driving hard, had to drive slowly until it was all gone.

    Millers also do CVL Turbo which adds 4ron to 20litres of fuel. A few weeks ago I bought two bottles of CVL, put them both in at the same time and filled up with Sainsbury's Super. So if my maths are correct the ron of the fuel should have been around 101ron. The car was totally different, came on boost much quicker and felt a lot smoother. But CVL should only be used on the odd occasion as its not kind to catalysts. I am not sure if CVL Turbo would be any good for the E46 M3.

    For me when I get my M3 I will have to use either Sainsbury's Super or BP Ultimate and Millers Octane +. Which should see me running around 99ron.

    I will try a couple of bottles of CVL Turbo in the M to see how it goes.

    If you think the E46 M3 engine is highly strung then you should experience the EJ20R engine in the TT legacy. It can have serious tantrums sometimes, lol.

    Click HERE for more info on the Millers range of products, Like I said before I use both Octane + and CVL Turbo.
     
  4. 29 May 2009 at 11:46 PM #84
    thehilders

    thehilders On the path

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    shell optimax
    all the way
    best money can buy
     
  5. 1 Jun 2009 at 2:26 AM #85
    Danny

    Danny Rocking a new hat

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    I alternate between Shell and BP Super,no difference.
     
  6. 1 Jun 2009 at 2:51 AM #86
    css

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    try tesco 99, u mite notice a difference... i did after some time with the other crap...
     
  7. 1 Jun 2009 at 11:22 AM #87
    piscean57

    piscean57 Banned

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    Danny... you need to run the car consistently with one fuel for at least 3 tanks to let the ecu adjust properly. If you chop and change as you are, you will see no difference.
     
  8. 1 Jun 2009 at 2:22 PM #88
    omega

    omega Banned

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    Correct:thumbsup:
     

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