Crawled up under the truck for the first time just to see where the oil filter was, etc. Noticed my front transfer case had alot of gunk on it and then noticed a black tube just above it that was wet with what what appears to be oil. This looks like some type of overflow tube or something the oil is coming from. Anyone know what this tube might be ???

 

That's the crankcase breather tube. Perfectly normal to have a few drips coming from there.

MikeyB