Fluid from transfer case vent tube?
I have a 2002 Trailblazer 4x4 that I purchased new back in 2001. Over the last 2 weeks I noticed an oil stain in my driveway. When I went under the truck to look where it was coming from it appears to be leaking from the transfer case vent tube and dripping on the shifter cable. Not a lot of fluid but it is dropping a few drops on my driveway and making a mess.
Why would fluid be leaking from there?
Truck has 75,000 miles on it and I am the original owner. After reading on this fine website I didn't realize that I should have changed the transfer case fluid at 50k. I'm off to the dealer Monday to buy fluid but I am wondering if there is a problem. Everything is working fine with no noises.
Thanks for any help.