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Gas for 1965 Buick Skylark

Discussion in 'Classic Buicks' started by kiwiokc, Oct 2, 2023.

  1. kiwiokc

    kiwiokc New Member

    have a 1965 Buick Skylark - what is the best gas to use 87, 89, or 91 all are full gas no ethonal. Do I need to add a lead additive and if so how often?

    Cheers -
     
    kiwiokc, Oct 2, 2023
    #1
  2. Nailhead in a 1967

    Nailhead in a 1967 Kell-Mnown Wember

    Are you in New Zealand? (I see "kiwi" in your name)

    The RON numbers of NZ petrol are different from the fuel in North America.
     
    Nailhead in a 1967, Oct 2, 2023
    #2
  3. philbquick

    philbquick Founders Club Member

    I run 91 octane non-alcohol in my 65 Special 300 2 barrel with no problem.
     
    philbquick, Oct 2, 2023
    #3
  4. gs66

    gs66 Silver Level contributor

    Same here, 91 octane ethanol free gas.
     
    gs66, Oct 3, 2023
    #4
  5. old navy

    old navy New Member

    if its a two barrel the 91 should be fine for a 4barrel wild cat you will need 93 most likely mine requires it/
     
    old navy, Feb 7, 2024
    #5
  6. Nailhead in a 1967

    Nailhead in a 1967 Kell-Mnown Wember

    The thread starter never returned to the board after posting this on October 2nd 2023.
     
    Nailhead in a 1967, Feb 7, 2024
    #6

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