Interesting, To be honest I don't think I even saw the vent tube, space is so limited in that area! I need to see if I can get a look at it because I think the "leak" that has what appears to be gear oil all over the PTU and dripping down around the motor mount is coming from that vent tube. Just a longer one in place to keep it from leaking would be nice. Any idea how long the stock one is?