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gray mystery goo in my dipstick filler tube!

Discussion in 'Early CJ5 and CJ6 Tech' started by jasonjp62, Feb 4, 2012.

  1. jasonjp62

    jasonjp62 Member

    I have some gray mystery goo in my dipstick filler tube on my 134 f head. Any thoughts?
     
    jasonjp62, Feb 4, 2012
    #1
  2. Admiral Cray

    Admiral Cray I want to do this again.. Staff Member

    Could be coolant from a head gasket leak.
     
    Admiral Cray, Feb 4, 2012
    #2
  3. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Maybe condensation from short runs, humid weather, or both. Oil will mix with water due to the detergent content, and make a creamy deposit. Run on the highway for a while and see if it goes away.
     
    timgr, Feb 4, 2012
    #3
  4. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    It could imply a leak, but chocolate milkshake in the filler tube is fairly normal in F-heads, for the reasons Timger says.
     
    PeteL, Feb 4, 2012
    #4
  5. 1970CJ6

    1970CJ6 new mexico air

    Check and see if your PCV valve is working.

    Andrew
     
    1970CJ6, Feb 4, 2012
    #5
  6. Dingado

    Dingado New Member

    You want to see some goo, I didn't understand the air flow on my A1 and tried to make it go backwards, doesn't work. I would say check the PCV valve, if it is
    plugged the system will try to work backwards and everything condensates at the top of the dip stick and valve cover.
     
    Dingado, Feb 4, 2012
    #6
  7. acme66

    acme66 New Member

    Mine does it all the time. Up around the top of the cap right? Unless the rest of the oil is grey ignore it.

    Ken
     
    acme66, Feb 7, 2012
    #7