However, generally speaking, 2005 Dodge Grand Caravans commonly used:
* 5W-20 This is a very common viscosity for this year and model.
* 5W-30 This might be an alternative, especially in hotter climates or if your manual doesn't specifically state 5W-20.
Crucially: The owner's manual will also specify if the engine requires synthetic blend, synthetic, or conventional oil. Using the incorrect type of oil can damage your engine.
Do not rely solely on this information. Find your owner's manual (often available online if you don't have a physical copy) and check the specifications there. Your vehicle's information sticker, usually located inside the driver's side door jamb, may also provide relevant information.