According to the owner's manual, 5w30. Check your oil level frequently, as the piston was designed without oil-drain holes in the piston lands. This can result in the oil control ring being gummed up by burnt oil and higher than normal usage/burning of oil. The engine is still running fine, you just need to top off the oil.
5w30
I have a 96 Saturn sl2 with 160k going thru 1 qt of oil per week. What can I do to stop it?
4.0 QTS
5 quarts.
On the bottom right of the engine.
97 SL2 does not have a change oil light. Only the red oil indicator which means you have a serious problem
Oil capacity for your 1999 Saturn DOHC 4-cylinder motor is 4 Quarts of oil
See link below
4 quarts with filter change
4.25 quarts of oil including oil filter
5W30
coolant capacity for the 96 Saturn SC2 is 7 quarts, almost 2 gallons.