FIPG - formed in place gasket - ie goo. Silicone sealant can work but can also cause problems if you over do it. You don't want any blobs to squeeze out of the joint and fall into the sump. Personally, I'd go with the OE cork gasket. The FSM for the 2F rec's a bit of goo in the corners where the bearing cap meets the pan. Make sure the sealing surface on the block is clean and the surface on the pan is both clean and flat. Its pretty easy to distort the pan from over tightening the bolts. A soft mallet and a straight edge can flatten the surface easily.
Also - some newer pans are designed to use goo or a molded rubber gasket rather than cork. Cork seems kind of primitve, but it can work quite well.
Last edited by 60wag; 12-11-2005 at 08:58 AM.