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F-Head on unleaded fuel?

Discussion in 'Early CJ5 and CJ6 Tech' started by Ab, Apr 24, 2006.

  1. Apr 24, 2006
    Ab

    Ab Member

    The Netherlands
    Joined:
    Mar 14, 2006
    Messages:
    51
    No my CJ is running again after years, something came to my mind......
    Since there is no unleaded fuel anymore, should I use a lead replacing additive, or takes the 134 F-head unleaded fuel without any problems?
    What are your expiriences?
     
    Ab, Apr 24, 2006
    #1
  2. Apr 24, 2006
    BlueFlu

    BlueFlu past owner of some ecj5's

    Hermitage, TN
    Joined:
    Jan 21, 2004
    Messages:
    1,552
    Either use an aditive or have hardened valve seats put in.
     
    BlueFlu, Apr 24, 2006
    #2
  3. Apr 24, 2006
    dohc281

    dohc281 It is what it is.

    Laurel Springs, N.J.
    Joined:
    Dec 30, 2004
    Messages:
    605
    I use unleaded and occasionally put a lead additive in the gas tank. No problems so far, 1000 miles. I don't know if the po used hardend valve seats when he redid the engine.
     
    dohc281, Apr 24, 2006
    #3
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