Leaking trans. fluid

[K-5 Bomber]

My wife's 86 K5 leaks transmission fluid when driving at HWY speeds. I don't see where it's coming from, but I find fluid on the tailgate after driving. We're running 33's on it with the stock 3.08 gearing and the 700R4. Any ideas what might be causing this?

 

[Chaddy]

I would clean it all up first with brake cleaner and start checkin for drips.

Check your shifter seal on the trans.

 

[Blue85]

The leak could be from either the tranny or the transfer case. One of them should be getting low? The oil is obviously red? I had a leaking rear axle pinion seal that showed up on the tailgate. I've had leaking gear boxes but I've never seen tranny fluid out back.

 

[Jason4x4]

make sure it's not over full, it could be blowing it out the vent when cruising down the freeway.

 

[blazinzuk]

I pulled the threads that hold the adaptor into the trans out. That will leak quite a bit started out small but got huge when I finally figured it out. I have also leaked gear oil out the diff. Put a vent tube on that and fixed that problem. BTW I helicoiled the trans never had a problem since