1995 Pontiac Grand Am Owner's Manual - Page 224

3.1L V-6: Adding Oil When to Add Oil If the oil is at or below theADD line, then you'll need to add someoil. But you mustuse the right kind. This part explains what kind of oil to use. For crankcase capacity, see "Capacities and Specifications" in the Index. NOTICE: Don't add too much oil. your engine has If so much oil that the oil level gets above the upper mark that shows the proper operating range, your engine could be damaged. Just fill it enough to put the level somewhere in the proper operating range. Push thedipstick all the way back in when you're through. 6-13