2nd Gen R56 Cooper S 91 Octane from 87 & 93

Discussion in '2nd Generation: 2007+ R55 through R61' started by Worldlygent, Aug 2, 2013.

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  1. Worldlygent

    Worldlygent New Member

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    #1 Worldlygent, Aug 2, 2013
    Last edited: Aug 3, 2013
    Folks,

    I've estimated a rule of thumb on how to buy a mix of gas with the lowest price assuming your favorite gas station doesn't carry 91 Octane. The rule is: Fill at 2:1 ratio of 87 Octane (regular) to 93 Octane. A mix of 89 and 93 is possible (at 1:1 ratio) but tends to be more expensive than using regular. My assumption is based on filling with 12 gallons (8 gal of 87 Octane. & 4 gal 93 Octane) with the price I paid today (on the expensive side of town). See attachment.

    I should have bought at the station around the corner that has 91 Octane as it was 5 cents cheaper than what I paid. Using this calculation, I could save $1.28 per fill, and I fill every two weeks so that's saving over $33 per year. BTW, I have 2007 MCS R56 so it "requires" 91 Octane. I haven't seriously calculated the MPG advantage or disadvantage but it's about +/- 1 MPG.
     
  2. CHKMINI

    CHKMINI Club Coordinator
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    You have access to 93 and you're not burning it? I suggest you take the money you are saving on your special mix and put it away for an early walnut blasting!


    Sent from my iPhone using Tapatalk 2
     
  3. sethat46

    sethat46 Well-Known Member

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    I would pay $50 not to have to calculate such nonsense! :beer

    That's just too much work to only save $33
     
  4. ScottinBend

    ScottinBend Space Cowboy
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    Not worth the hassle to save a bit under $50/yr. I think you would be better off just running a top tier premium fuel.
     
  5. MCS02

    MCS02 Moderator
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    I've had my Mini 9 years. I only use 93 octane top tier fuels. This is a long run game. It's worth it.
     
  6. c.hack

    c.hack New Member

    May 20, 2013
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    I paid $33k for my MINI and enjoy it more an any car I've ever owned. Saving a couple of bucks by buying cheap gas for an awesome $30k car is penny wise pound foolish. I would no more buy low octane than I would put retreads on my MINI.

    If saving a few bucks is so important you should get a Prius.
     
  7. Dave.0

    Dave.0 Helix & RMW Powered
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    93 only for me. :Thumbsup: With a fine .8 mist of Meth when my right foot gets heavy. :devil:

    If you want to save a few bucks use recycled 40 grit toilet paper.
     
  8. sethat46

    sethat46 Well-Known Member

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    Honestly, when discussing my car I cringe every time someone asks about my gas mileage. Not because its bad but because I don't care. We don't drive an appliance and that's typically why people get a MINI or any other car that's not a Honda or Toyota. You don't buy fun cars and worry about it, it should be a rule.
    Hope we aren't scaring this guy off but since the majority of us on here are car guys and ladies the whole "castrati" argument for cleaner more fuel efficient cars doesn't get far.... Because we just don't give a damn. And saving money by diluting your fuel also doesn't sit well with guys that care for their engine.

    Here I am sounding like Dave.0 hahaha
     

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