The oil filter on a 1996 Saturn Sl1 is located on the back of the engine, on the passenger side. It is a round canister sticking out from the engine block.
Jacking Up the Car
Park the car on level ground, shut off the engine, engage the parking brake and place wood blocks behind and in front of the rear left wheel. Jack up the car at the front passenger side.
Get Under the Car
Take a flashlight and carefully lie on your back and look under the car, positioning yourself under the passenger door. Point the flashlight at the back of the engine.
Finding the Oil Filter
Scan the back of the engine on the passenger side until you see a canister-shaped object that looks similar to a small can of coffee sticking out of the back of the engine. This is the oil filter.
