• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

T-5 transmission gasket/seals leaking?

  • Thread starter Thread starter JasinC19
  • Start date Start date Mar 7, 2012

JasinC19

What hole is this!?!
Jun 7, 2011
312
2
19
Mar 7, 2012
#1
  • Mar 7, 2012
  • #1
Hey guys, I had my t-5 stored for some time now (drained).

I was cleaning it today, had it flipped over, and noticed there was significant seapage out of the top panel. Is this normal or are there seal(s) bad? I'm wondering if they dried out from having no fluid inside.

In the pic below, the red circle is around the seal that was leaking. The blue circle is around the nose of the trans. It looks like to take the "top" off of the trans to replace the seal, I would need to first take off the "blue" part.

Is this accurate? And is this something that is easy? I have a FSM, but am not good at using it.

 

JasinC19

What hole is this!?!
Jun 7, 2011
312
2
19
Mar 7, 2012
#2
  • Mar 7, 2012
  • #2
Update: I am pretty sure the "leak" was coming from a loose valve on top. You can't see it in the pic, but I *think* the FSM has it labelled as "vent". It moves slightly up and down.

I think I am not going to have to crack her open after all. Thankfully.
 

ID89GT

10 Year Member
May 26, 2008
1,659
18
49
Spokane Valley, WA
Mar 8, 2012
#3
  • Mar 8, 2012
  • #3
That "valve" is the pressure release to atmosphere. Fluid will come out of it if you had it tilted so it could run out of it. Its completely normal
 

JasinC19

What hole is this!?!
Jun 7, 2011
312
2
19
Mar 8, 2012
#4
  • Mar 8, 2012
  • #4
That is good to hear. I'm really not wanting to rebuild the trans after doing all the work to the engine! Although I did replace the bearing retainer. And added ONE OF THESE
 
You must log in or register to reply here.

Similar threads

C
C4 trans help needed
  • CPH89LX
  • Apr 26, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
6
Views
217
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Apr 28, 2026
CPH89LX
C
S
Drivetrain 8.8 Pinion and 302 rear main seal leaks after replacing. 93 5.0 with t-5
  • Steigy4827
  • Jun 23, 2025
  • Fox 5.0 Mustang Tech
Replies
10
Views
667
Fox 5.0 Mustang Tech Apr 1, 2026
Steigy4827
S
Drivetrain 83’ Glx convertible C5 Trans help!
  • JacksonJared2113
  • Dec 25, 2025
  • Fox 5.0 Mustang Tech
Replies
2
Views
393
Fox 5.0 Mustang Tech Dec 26, 2025
JacksonJared2113
C
Drivetrain T-5 transmission issue
  • Ch3No2
  • Jul 11, 2025
  • Fox 5.0 Mustang Tech
Replies
3
Views
379
Fox 5.0 Mustang Tech Jul 18, 2025
2000xp8
J
2004 Mustang 3.8L V6 vibrations above 65 MPH and differential leaks
  • joeybuddy96
  • Mar 16, 2026
  • SN95 V6 Mustang Tech
Replies
16
Views
584
SN95 V6 Mustang Tech Jul 14, 2026
joeybuddy96
J
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?