The oil capacity for a 2004 Chevy Malibu depends on the engine. There were several engine options available that year. To know for sure, you need to check your owner's manual or the sticker located under the hood (often near the radiator cap or on the underside of the hood).
However, a good estimate is between 4 and 5 quarts. You should always use the amount specified in your owner's manual, as using too little or too much oil can damage your engine.
