The recommended oil for a 2009 Chrysler PT Cruiser depends on the engine it has. Chrysler offered several engine options for that year. To know for sure, you need to check your owner's manual. It will specify the correct oil type (e.g., 5W-20, 5W-30) and the recommended API certification (e.g., SM, SN, etc.).
However, generally, for a 2009 PT Cruiser, you'll likely find that 5W-20 is recommended, but again, always check your owner's manual. Using the incorrect oil can damage your engine.
