C4 Tranny Leak
 

My C4 is leaking fluid out the rear seal and onto the slide yoke and drive shaft. What can the possible causes be? Too much tranny fluid? Bad rear seal? If it's the seal, is it possible to change it with the tranny in the car?

Any help appreciated...my garage floor and my buddies driveways would appreciate it also.

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67 Mustang Convertible
289 / C4 / Red in & out

Could me just a seal, but also could be the bushing in the tail housing that the slip yoke goes into. Also, the yoke could be worn too.

You can change the seal and bushing with the trans in car. If you are changing the bushing. [see if there is play by wiggling the yoke up and down while still in car] It is easier to change the bushing, if you don't have the special tool, by removing the tail housing. It isn't hard to do.