I currently own three Saab's, a 1999 93 Viggen , 2001 95 Aero, 2003 Aero.
Be certain that it has the current PCV system installed.
Drop oil pan to check condition of sump and potential blocking of pickup screen.
OCI of 3k with Shell Rotella 5w-40.
Enjoy.
Been there done that, owned all models...