Last weekend I spotted a small puddle of trans fluid under my 83 K5 Blazer.
Turns out that it was coming from the transfer case (NP208) breather tube.
It seems that it was spewing out during a drive on the interstate and
dripped down when I pulled into the driveway. The fluid level was not
noticeably down. The trip was only about a half hour, and I had driven
maybe 5 minutes in 4Lo before the trip.
I had this happen one other time when I left the hubs locked by mistake and
drove at about 80 on the freeway. In this case though, the hubs were
unlocked. Well, they were in the unlocked position, maybe they stayed
locked for some reason? I jacked the truck up and the tires spin freely, so
the hubs are working properly.
My questions are: should I be worried about this? Is it normal to spew some
fluid even with the hubs engaged (and the T-case in 2Hi)? My Jeep doesn't
even have lockout hubs and it never does anything like this. What could be
If it matters, I have a long piece of rubber fuel line on the breather going
up to the engine compartment to make sure no water gets in. Doubt this
matters, but it does cause more of a mess.