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diff cover gasket vs rtv/etc..

Discussion in 'Early CJ5 and CJ6 Tech' started by 57cj5, Mar 28, 2011.

  1. Mar 28, 2011
    57cj5

    57cj5 Member

    North Carolina
    Joined:
    Aug 31, 2005
    Messages:
    593
    I will be replacing my differential covers. Question, shall I use a gasket only, gasket with rtv black on 1 or both sides, rtv black only, or permatex right stuff only? 2) How much of the rtv or permatex if any?
    Thanks
    Paul
     
  2. Mar 28, 2011
    sailorjeeper

    sailorjeeper What... me worry?

    Spiro, OK
    Joined:
    Oct 6, 2010
    Messages:
    29
    Just my opinion, but I think that you will be much happier if you ever have to go back in if you just clean both surfaces completely, and make sure there is absolutely no oil residue on either one (Brake Cleaner) and then use just the plain gasket.
     
  3. Mar 28, 2011
    neptco19

    neptco19 That guy....

    Athens, GA
    Joined:
    Sep 26, 2003
    Messages:
    1,381
    Gasket with a light film of black rtv in both sides. Works every time.
    Posted via Mobile Device
     
  4. Mar 28, 2011
    unclebill

    unclebill Banned

    a sun blasted...
    Joined:
    Feb 17, 2009
    Messages:
    2,358
    when i did it i used permatex right stuff and it works great.
    getting the cover off again is not a big deal.
    just break the seal with a razor blade.
    i used that product on everything.
    i dont have one drip under the slug.
     
  5. Mar 28, 2011
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
    Messages:
    23,596
    Yep, that's what I do.

    I would not spend much time/effort optimizing this issue :)
     
  6. Mar 28, 2011
    AKCJ

    AKCJ Active Member

    Fairbanks, Alaska
    Joined:
    Aug 12, 2003
    Messages:
    1,036
    I'd like to try the lubelocker gasket. Looks like a good product. If it seals good and is reusable what's not to like?

    Anybody used 'em?
     
  7. Mar 28, 2011
    supertrooper

    supertrooper Member

    moreno valley, ca
    Joined:
    Nov 12, 2007
    Messages:
    791
    this question seems to be like asking whats your favoriate color, everyone says somthing different. i think all the ways the OP mentioned work good. i use black RTV only and never had a leak in the jeep or my truck.
    Posted via Mobile Device
     
  8. Mar 28, 2011
    termin8ed

    termin8ed I didn't do it Staff Member

    Mason, MI
    Joined:
    Dec 22, 2002
    Messages:
    4,434
    I use Mopar engine and axle sealant only


    But then I usually have half a tube laying around that I don't pay for anything most of the time:D
    its good stuff that we use by itself on the newer vehicles. d44's included. haven't had a problem yet on my jeep
     
  9. Mar 28, 2011
    57cj5

    57cj5 Member

    North Carolina
    Joined:
    Aug 31, 2005
    Messages:
    593
    good opinions. I have some black rtv and permatex, I will use one of those for the diff.
    Thanks,
    Paul
     
  10. Mar 28, 2011
    jeep2003

    jeep2003 Well-Known Member

    Upstate NY
    Joined:
    May 30, 2006
    Messages:
    1,952
    i use the permatex stuff. Just clean it real good and i use my finger to spread the stuff evenly over the whole surface not just blobbed in a little line . i do just the cover and stick it on.
     
  11. Mar 28, 2011
    mcwall1064

    mcwall1064 New Member

    Sahuarita, AZ
    Joined:
    Jul 31, 2009
    Messages:
    10
    I use the Lubelocker gasket on both the front and rear diff covers and couldn't be happier. No leaks or seepage at all.
     
  12. Mar 29, 2011
    Mike C

    Mike C Member

    Austin, TX
    Joined:
    Feb 19, 2007
    Messages:
    743
    I use the gasket and then the Permatex aviation gasket sealer. Comes in a plastic jar with a brush. It appears to be the same stuff as the GM gasket sealer, but half the price.
     
  13. Mar 29, 2011
    Vanguard

    Vanguard Take Off! Staff Member

    Vista, CA USA
    Joined:
    Aug 30, 2006
    Messages:
    2,265
    This is what I do. I've used the blue RTV as well.
     
  14. Mar 29, 2011
    Long&Low

    Long&Low Active Member

    Geauga County, OH
    Joined:
    Dec 13, 2009
    Messages:
    1,212
    RTV or Permatex only is what i've always used on dif covers.
     
  15. Apr 4, 2011
    repeater

    repeater I'll break it.

    Joined:
    Feb 7, 2010
    Messages:
    98
    I just started using the 3M gasket adhesive that Marine shops carry....it's about 12.00 a tube, black and potent enough smell to knock you on the floor...stuff is insane and works better than any of the 5,000 variants of permatex you can use. Tacks up super quick too. I've switched permanently except for on bolts I still use RTV.
     
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