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Weird Octane Levels?

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    #16
    Originally posted by JasonC View Post
    I just go to the airport and get 100LL. At $3.90 a gallon, and has lead, i'm happy. Although can't run it in a efi car. But the ol Corvair likes it!
    your corvair is hot! how does it compare to the e30? you can pm me if you like. (thread jack)

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      #17
      Originally posted by rustybullet View Post
      your corvair is hot! how does it compare to the e30? you can pm me if you like. (thread jack)
      Here, i'll just bump this thread so we aren't thread jacking this one lol. http://www.r3vlimited.com/board/showthread.php?t=98443

      1992 BMW 325iC
      1978 Chevrolet Monte Carlo
      1965 Chevrolet Corvair Monza 140hp

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        #18
        Originally posted by mrsleeve View Post
        Yes thats all we see here too (unless its e85 or has more than the 10% ethanol)

        Sure you can run a little better fuel in it, but its not really necessary. The euros call for 91 octane in the M42 but they only calculate the RON. We here in the states average the RON and the MON for our Octane numbers. Just run the mid grade fuel to be on the safe side if you must. IIRC the rating for M42 on RON+MON/2 is a 90 octane. So yeah you should be on the mid grade fuels while stock

        Adrain is right about the BTU with the higher Octane Attained with higher concentrations of Ethanol, you will lose milage with the more ethanol in your blend you are running.

        In my 1st post thought you had a m20


        Neo: Yes there may be some places that are still running 100% petrol, but its not the norm, most have the 10% ethanol in them,
        it says right in the manual to run premium for the M42. BMW wasn't stupid, they didn't forget that the US uses a different octane measurement than europe.
        Build thread

        Bimmerlabs

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          #19
          Originally posted by nando View Post
          it says right in the manual to run premium for the M42. BMW wasn't stupid, they didn't forget that the US uses a different octane measurement than europe.
          Who reads the owners manual? :p
          '88 325ic - Vert in winter baby!
          '91 318is - Gone :(
          '95 530i - Gone :(

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            #20
            Originally posted by JasonC View Post
            I just go to the airport and get 100LL. At $3.90 a gallon, and has lead, i'm happy. Although can't run it in a efi car. But the ol Corvair likes it!
            fairly sure you can run it in a EFI car just not one with with CAT on it. I cant remember 100% though
            Originally posted by Fusion
            If a car is the epitome of freedom, than an electric car is house arrest with your wife titty fucking your next door neighbor.
            The American Republic will endure until the day Congress discovers that it can bribe the public with the public's money. -Alexis de Tocqueville


            The Desire to Save Humanity is Always a False Front for the Urge to Rule it- H. L. Mencken

            Necessity is the plea for every infringement of human freedom. It is the argument of tyrants.
            William Pitt-

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              #21
              Originally posted by mrsleeve View Post
              fairly sure you can run it in a EFI car just not one with with CAT on it. I cant remember 100% though
              CATs and 02 sensors, the lead fucks them up eventually.

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                #22
                Ahhhh but there are O2 sensors made for leaded fuel
                Originally posted by Fusion
                If a car is the epitome of freedom, than an electric car is house arrest with your wife titty fucking your next door neighbor.
                The American Republic will endure until the day Congress discovers that it can bribe the public with the public's money. -Alexis de Tocqueville


                The Desire to Save Humanity is Always a False Front for the Urge to Rule it- H. L. Mencken

                Necessity is the plea for every infringement of human freedom. It is the argument of tyrants.
                William Pitt-

                Comment

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