Randy Bergum <organslave@EARTHLINK.NET>
 Subject: Re: removing main engine seal?
  Mighty tough, but a thin coat of grease on the new one will make it
 easier next time. >>

I don't think this is a good practice. Seals generally should go in dry, and
into a dry case hole.  A long time ago, in a shop far, far away (sorry) I put
some aviation gasket sealant on a tough subaru cam seal thinking the gummy
thick liquid would ease installation and then dry tough and keep the seal in
place.  You can guess what I was doing a few days later, a new seal and one
of the belts for free.
Patrick
Free advice is worth every penny.