Anyone know what the dipstick range on the 2006 9-5 2.3 liter is? It has the round tip at the bottom and about 1" long flat spot which im assuming would be the top of oil mark at the end of the square part of the dipstick? My 2007 g6 has 4 holes for each quart. Just curious as to how much oil to add as the dipstick was dry on the 9-5 and what is the quart range on it?