There is a known problem with factory head gaskets on certain later
year Subaru engines, especially DOHC 2.5's,...however, once you
install the "revised" gaskets from the dealer you are good for
100-150k miles.

The Subaru head gaskets installation procedure is like a "normal"
engine.  Remove head, install 1 gasket (dry, no goop) then follow
torque sequence.  Compare this to the kooky waterboxer head gaskets
procedure.

After you replace head gaskets on a Subaru, they are good for a long
time.  I've seen Waterboxers fail again within 20-30k miles.

Paul G.
(who was owned/worked on many Vanagons and many Subaru's too)

>I have that same 2.5 165hp engine in my 97 Outback, and I love it.  The
>head gaskets were replaced by the PO...they are know to be weak.