Thread: Defender transmission leak

Originally Posted by Flatty

I hope this is the right place to ask this question? My transfer case is leaking as well (1996 Defender) but I am not sure where it is coming from. There are drops of oil on the bolts underneath it (the transfer case sump) & a drop on the brake drum. There doesn't appear to be any large amount blowing back under the vehicle or on the exhaust. Once it left a bit on the road while I was idling waiting for a gate to open but that is all. I have just checked the level and used 500ml in 8-9000 kms. This amount should leave a rather large mess wouldn’t you think? What is the most likely cause and how do I fix it? By the way I checked the gear box as well it was OK & didn't appear over full. While parked it barley leaves a couple of drops.
Thanks in advance Flatty

Check the front prop shaft seal. Mine had a leak and it worked back to the rear. When I looked underneath there were usually drops forming on the bolts on the bottom of the case. Simple fix by putting in a new seal. Since then no problems. Just leaks everywhere else like normal

Originally Posted by Flatty

I hope this is the right place to ask this question? My transfer case is leaking as well (1996 Defender) but I am not sure where it is coming from. There are drops of oil on the bolts underneath it (the transfer case sump) & a drop on the brake drum. There doesn't appear to be any large amount blowing back under the vehicle or on the exhaust. Once it left a bit on the road while I was idling waiting for a gate to open but that is all. I have just checked the level and used 500ml in 8-9000 kms. This amount should leave a rather large mess wouldn’t you think? What is the most likely cause and how do I fix it? By the way I checked the gear box as well it was OK & didn't appear over full. While parked it barley leaves a couple of drops.
Thanks in advance Flatty

Believe it or not they can leak from the bolts!.
Some of the bolts actually go into the fluid cavity, Blind bolts , the oil then wicks past the bolt threads and forms on the heads. You might have to drop the oil, and coat the bolts with thread sealer.