help!!?!

[2fstcummins]

so my truck is leaking kind of alot of oil, more than usual for sure, i got it on a lift today, and its not the oil pan, or the timing cover (front of the engine??)
but it only leaks when its in gear?? could it be a oil line or something? it's comming from the driverside of the engine...

 

[grncummins]

its not oil being pushed out the front vent tube by blow bye is it?

 

[cummins.1]

It could also be coming from the tappet cover gasket along the side of the block.

 

[nrose07]

Power steering pump shaft seal.