I hope I can get some help on a small oil leak on the front side of my 1999 S80 T6, 84k. I have replaced (myself) the turbo return tube seals, the dipstick, and the oil cap gasket ... all of which were needed. However an annoying small leak on the front side of the engine persists. I understand that there is a problem with the crankcase ventilation box underneath the air intake manifold ... but am uncertain how to get to it ... does the manifold need removed? Is there a gasket repair part number kit for it? I am not afraid to do it, but if there is another way, I would prefer it.

Thanks in advance!