Newbiw engine question

Discussion in '40- & 55-Series Tech' started by Heavy Wood, Aug 15, 2005.

  1. Heavy Wood

    Heavy Wood

    Messages:
    3
    Likes Received:
    0
    Joined:
    Aug 13, 2005
    I just purchased a 1975 FJ40, and the previous owner, like me, has little to no knowledge about automotive maintenance. Back to the question, the previous owner stated that I needed to add a lead additive each time I fuel up, or else, he did not know. The guy at local shop thought that it may have to do with the lead additive coating the valves and corresponding brass fitings that go along with it.

    Does this sound like it has any merit to it?
    :confused:
    :confused:
    :confused:
     
  2. FJAfrica

    FJAfrica

    Messages:
    205
    Likes Received:
    1
    Joined:
    Dec 8, 2002
    Location:
    Cape Town, South Africa
    If you are running unleaded gas, yes, you would need to put in an additive, else the valve seats will eventually erode.
     
  3. John Smith

    John Smith In the garage

    Messages:
    4,205
    Media:
    6
    Albums:
    2
    Likes Received:
    264
    Joined:
    Jun 7, 2004
    Location:
    Maryland
    What determines whether or not you have to run lead additive? Is it a difference in hardened valves or not, or some other thing? I don't know of anyone with an F engine who runs lead additive and they seem to do fine.
     
  4. petescoffee

    petescoffee

    Messages:
    1,912
    Likes Received:
    65
    Joined:
    Dec 29, 2002
    Location:
    Walnut Creek, CA
    YOur 75 should have a 2F in it and should run fine on unleaded.
    Post up some pic newbie.
     
  5. HawkDriver

    HawkDriver

    Messages:
    3,286
    Media:
    64
    Albums:
    5
    Likes Received:
    57
    Joined:
    Feb 1, 2002
    Location:
    No. Ogden, Utah
    Yes I think it would have merit, but not with your engine. Unleaded should be fine. Let's ID that engine.
     
  6. Heavy Wood

    Heavy Wood

    Messages:
    3
    Likes Received:
    0
    Joined:
    Aug 13, 2005
    I looked under the hood, and believe the engine was just an F, not a 2F, but I could be mistaken.
    Would that make a difference?
     
  7. HawkDriver

    HawkDriver

    Messages:
    3,286
    Media:
    64
    Albums:
    5
    Likes Received:
    57
    Joined:
    Feb 1, 2002
    Location:
    No. Ogden, Utah
    I ran my 73 F unleaded.
     
  8. HawkDriver

    HawkDriver

    Messages:
    3,286
    Media:
    64
    Albums:
    5
    Likes Received:
    57
    Joined:
    Feb 1, 2002
    Location:
    No. Ogden, Utah
    Look down by the distributor for a stamp, it'll say F or 2F.
     
  9. PUPTLAM

    PUPTLAM

    Messages:
    414
    Media:
    18
    Albums:
    1
    Likes Received:
    2
    Joined:
    Jan 6, 2005
    Location:
    EAST COAST
    74 FJ40 1F- I am running 87 octane unleaded. I also believe in 75 a cataletic coverter was stock on all vehicles sold in the USA?
    Anyone back me up on this? Just going on shop talk here, no proof.
    Unleaded should be fine!!
     
  10. Heavy Wood

    Heavy Wood

    Messages:
    3
    Likes Received:
    0
    Joined:
    Aug 13, 2005
    Will post pic, probably tomorrow, and I will look to see what engine type it is. That way, I can post a picture, and ask "what the hell is that, and what does it do, but most importantly, how much will it cost to fix."
     
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.