What oil for a 2004 5.3 liter engine?

The 2004 5.3L engine, likely found in a Chevrolet, GMC, or Cadillac vehicle, requires an oil meeting the specifications listed in your owner's manual. However, a common and generally safe recommendation is 5W-30.

Important Considerations:

* Check your owner's manual: This is the *most* important source of information. The manual will specify the exact oil type and viscosity (like 5W-30, 10W-30, etc.) and may also list acceptable oil certifications (like GM dexos1).

* Oil type: The manual will specify whether to use conventional, synthetic blend, or fully synthetic oil.

* Oil viscosity: The viscosity (like 5W-30) is crucial for proper lubrication at different temperatures. Using the wrong viscosity can damage your engine.

* Oil certifications: GM may specify particular oil certifications that ensure the oil meets their standards for performance and protection.

Do not rely solely on this information. Find your owner's manual and use the oil specifications listed there. Ignoring these recommendations could void your warranty (if applicable) or damage your engine.