Oil capacity should be 5 litres, this should be stated under the motor hood near the hood latch. Also you could have a look in your owners manual under the "Spec's" section.
4.5 quarts
4,3 liter
6 qts.
4.5 quarts
22 pounds
use a 1.6-liter 4-cylinder engine
5 and a half quarts including the filter
5 qts. to 6 qts. Max.
Engine oil capacity with filter change, 4 and 1/2 qts.
The 98 Cavalier 2.4 is a NON interference engine.
The starter for a 1998 Cavalier is mounted on the side of the engine. It is at the rear, near the bottom.
It depends on the climate but in most cases it takes 5W-30.