Minor leak at bottom of transmission
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Thread: Minor leak at bottom of transmission

  1. #1
    Registered User
    Join Date
    Mar 2019

    Minor leak at bottom of transmission

    Alright guys, what does this look like? Nothing dripping yet. 75K miles 2007 Odyssey.


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  3. #2
    Registered User
    Join Date
    Jul 2017
    Is that the rear main seal cover? If it is, you can take off that cover and see what's going on within.
    2006 Silver Ex L with 100k
    new transmission
    1999 Suburban K2500 454

    2004 Scion xB 5spd (sold)
    2006 Scion xA 5spd (sold)
    2001 Ford Expedition 5.4 (sold and missed)
    2001 Nissan Pathfinder (sold)
    1999 Ford Expedition 5.4 (totaled)
    1977 K5 Blazer 350, 6" suspension lift (sold)
    1994 Acura Legend 6spd (sold)
    1991 Toyota Camry (given away, perished)
    1987 Toyota Tercel Hatchback 5spd (given away, perished)

  4. #3
    Registered User John Clark's Avatar
    Join Date
    Oct 2008
    Charlotte, NC
    That is the cover to access the flexplate bolts inside the bell housing. It looks like a rear main seal leak but could also be ATF leaking from the front seal inside the transmission
    2008 Odyssey Touring-Silver
    2011 VW Jetta SE-Black-Totaled
    2012 VW Passat-Black
    2002 GMC Sierra SLT LB Z71-Red
    1998 Nissan 200SX SE-Blue

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  6. #4
    Registered User
    Join Date
    Mar 2019
    Ugh... not gonna deal with rear main seal. Anyone have any experience with rear main seal leak additives?
    Thanks for diagnosis.

    Edit: Some older posts are suggesting checking PCV valve. Will check that first and then consider ATP AT-205.
    Last edited by taz1004; 04-13-2019 at 07:10 PM.

  7. #5
    Registered User
    Join Date
    Mar 2019
    PCV indeed is clogged. Will replace it and see.

  8. #6
    Registered User dntboles's Avatar
    Join Date
    Jan 2002
    I had an almost identical leak and changed the PCV. The leak stopped and that was a little over 1 year ago.
    07 Slate Green Metallic EX-L RES
    03 Sandstone Metallic EX-L RES
    02 Silver Euro Spec Honda Stream SE Sport (2014 - 2017)
    89 Mustang GT Conv

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