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Tranny question?????????????

Discussion in 'The Hokey Ass Message Board' started by wingnutz, Mar 29, 2008.

  1. Well I went a whole winter without firing up the roadster and today Iwas looking at the car to assess the remaining work to be done and I noticed a puddle of tranny fluid under the car.

    First I thought that the "O" ring around the filler was leaking... "Nope" it appears to be coming from the front seal of the tranny...!

    Normally I'd just yank the trans and replace the seal but I planned on replacing the trans two months from now and I haven't the cash or the time right now to move up the schedule...!

    My question... are there any liquid sealers that I can pour in there to stop it from leaking???
     
  2. plmczy
    Joined: Aug 3, 2001
    Posts: 2,408

    plmczy
    Member

    I've never used them but I've heard bad things about using those types of sealers in automatics. Sticking valves and servo pistons and stuff. later shawn
     
  3. Rich Rogers
    Joined: Apr 8, 2006
    Posts: 2,018

    Rich Rogers
    Member

    I had a Poncho with the T400.Every spring when I took it out of storage I had to take a roll of paper towels to clean up the tranny fluid that leaked from sitting. Seemed to only leak when it sat for long periods. Started driving it and it quit leaking on its own every year. Drive it and see what happens
     
  4. Rich Rogers
    Joined: Apr 8, 2006
    Posts: 2,018

    Rich Rogers
    Member

    in that case, doesn't Lucas have a trans. sealer? I know I've had real good luck with other products of theirs
     

  5. hoarder1212
    Joined: Jun 1, 2007
    Posts: 156

    hoarder1212
    Member

    GM trannys are known for this, The fluid drains back to the low areas of the trans and will push its way past the seals,ie tranny pan and front seal.Do you have a GM? I would drive it locally and put a hundred or so miles on it and see what happens.
     
  6. Flatdog
    Joined: Jan 31, 2003
    Posts: 1,285

    Flatdog
    Member Emeritus

    sent you a pm
     
  7. kooldaddy-o
    Joined: Jul 29, 2006
    Posts: 119

    kooldaddy-o
    Member

    Do not put any "sealer" in any trans...they swell all the seals and then its junk..the seals are a specific engineered size....drive the thing you are probably ok....I rebuilt transmissions for 26 years
     
  8. toms37gmc
    Joined: Aug 10, 2006
    Posts: 147

    toms37gmc
    Member

    I've had GM 350s and PGs in my street rod for 25 years and every spring there is a small puddle of tranny fluid under the car, after it sits for about 6 months in the Minnesota winter. I took one to a shop once and the guy replaced one external seal and told me not to worry as they all do this. I've never had a failure on one yet. They all seem to stop leaking after you drive them for a bit.
     
  9. enjenjo
    Joined: Mar 2, 2001
    Posts: 2,539

    enjenjo
    Member
    from swanton oh

    The 350 Turbo in my Marlin has been doing that for 20 years. Every spring, get it out, top up the trans, and it doesn't leak all summer.
     
  10. HemiRambler
    Joined: Aug 26, 2005
    Posts: 4,208

    HemiRambler
    Member

    I'm with the guys that say leave it alone. A couple of my torqueflites do the same thing. On mine it's always the "O" ring on the shift cable. When the trans sits awhile the converter drains back raising the fluid level in the trans above the shift cable - bad "O"ring there now leaks. Drive it daily or weekly or monthly - no leaks.
     
  11. specialk
    Joined: Sep 28, 2005
    Posts: 598

    specialk
    Member

    Not to hijack, but I've got a similar (yet different) problem. I just installed a T85 OD trans in my truck and it leaks out the back when parked on an incline (front higher than back) in the driveway. I don't think it's overfilled so I'm wondering what variety of seals are in this tranny or if I have a poorly fitting output yoke?
     
  12. gary terhaar
    Joined: Jul 23, 2007
    Posts: 656

    gary terhaar
    Member
    from oakdale ny

    The converter drains back after long periods of rest and durring start up the pump tries to fill it quickly.This somtimes builds alot of pressure and the fluid is unable to fillup a empty converter that fast.Either it goes past the front seal or blows out the vent located at the top of the pump.After the converter fills at its own rate topp off any purged fluid and drive it.It should be fine except for the enviormental disastor it left behind.Never use any snake oil sealers of anykind,it softens the seals and glue themseves to the drums inside the trans tearing themselfs apart.Real hatefull to the guy tring to rebuild it.
     
  13. Dirty2
    Joined: Jun 13, 2004
    Posts: 8,903

    Dirty2
    Member

    I am not an auto guy but I remember some yokes having a hole in the center and auto,s not having it . If yous does try putting some sealer in the hole to see if that works . If it does replace it .
     
  14. Dirty2
    Joined: Jun 13, 2004
    Posts: 8,903

    Dirty2
    Member

    I thought you were sick .
     
  15. Dakota
    Joined: Jan 21, 2004
    Posts: 1,535

    Dakota
    Member
    from Beulah, ND

    Id try that Lucas Tranny Additive.. Lucas stuff is good.
     
  16. specialk
    Joined: Sep 28, 2005
    Posts: 598

    specialk
    Member

    To the best of my recollection, there isn't a hole in mine so I don't think that's the issue :( of course, it won't take but 20 minutes to remove the DS and find out for sure :( :( plus I love laying on my back on the garage floor :( :( :(

    Oh well, gotta yank the seat and cut the floor (for the shifter) anyways, might as well try this out.

    Thanks for the suggestion.

     
  17. One auto transmission shop customer advised me to only us Lucas additives.
    His observations were that other brands corroded the metal components inside the transmissions. Lucas offers transmission stop slip and power steering system stop leak.
     
  18. JustBryan
    Joined: Feb 22, 2008
    Posts: 172

    JustBryan
    Member
    from NE Ohio

    Anyone(at trans shop) who recommends any sealer/additive for trans quick fix is just looking forward to the rebuild their going to see in the very near future.
    DON'T DO IT!!!!!!!!!!!!!!
     

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