There is a black plastic device under the inj. pump. The fitting on the bottom of it is what looks to be leaking. I will post a pic in a bit when I get it off the camera. I have read about the hard plastic lines and need to change them I assume too but I think this is leaking at the fitting that goes in the bottom of that black device.

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1996 E300D
1996 E320 Wagon 4MATIC
2003 Jetta TDI- GLS, 5-spd
1997 Passat TDI
2002 F350 Crew cab 4x4 Powerstroke
Jacobsen HR 15' cut ZTR w/ 80 HP Perkins diesel
Hustler 6' front deck with 28HP Kubota diesel