The manual will specify:
* Oil type: This might be conventional, synthetic blend, or full synthetic.
* Viscosity: This is a number like 5W-30 or 10W-40. The viscosity is crucial and using the incorrect one can damage your engine.
* Oil certifications: Look for certifications like API (American Petroleum Institute) and ILSAC (International Lubricant Standardization and Approval Committee) specifications.
Do not rely on generic advice online. Using the wrong oil can seriously damage your engine. Check your owner's manual or the sticker often located inside the driver's side door jamb. If you can't find your manual, you can often find a digital version online through the Chrysler website using your vehicle's VIN.