Chevy and GMC Duramax Diesel Forum banner

What kind of drain tube is this?

1K views 7 replies 5 participants last post by  Taylor-2313 
#1 ·
I've got an LB7, what's this drain tube underneath the pulleys of the engine?
It's always a tad oily/ greasy around that area.
Thanks
 

Attachments

See less See more
1
#2 ·
Crankcase venting, IIRC.
 
#4 ·
Is this normal or should I be concerned? It passes the "cap blow-by test". If that has anything relevance
 
#7 ·
Four years ago was just yesterday, right???? For real though a guy replied a suggestion back then and I forgot about it. It seems to have been deleted and here I am asking again 🙃
 
#6 ·
Completely normal and nothing to be worried about. When you see a ton of smoke or oil coming out of it, that’s when you need to be concerned
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top