2005 Saab 9-5

WHAT ENGINE DO U HAVE, LAST KNOWN V6 MADE WAS IN 2003 , & U HAVE A 2005 , U NEED TO CORRECT THIS FOR RIGHT REPAIR DIRECTIONS,IF IT IS A 4CYL CHECK YOUR OIL PRESSURE SWITCH BEHIDE STARTER MOTOR ,NEXT CHECK FOR LEAK FROM HEAD GASKET AREA ,LOOK ON THE SIDE WHERE THE ENGINE DRIVE BELT IS CHECK IF OIL RUNS DOWN IN THAT AREA .