* Viscosity: This is usually expressed as something like 5W-20, 5W-30, or 0W-20. The number before the "W" indicates cold-weather performance, while the number after indicates performance at higher temperatures.
* Oil type: This will specify if it needs to be conventional, synthetic blend, or fully synthetic. Again, your owner's manual is the definitive source.
* API certification: This is a rating system indicating the oil's performance standards. Your manual will list the required API certification.
Do not rely on general advice. Using the wrong oil can severely damage your engine. Always consult your owner's manual. It's usually located in a glove compartment or under the driver's seat. If you cannot find it, you can often download a PDF version from the Dodge website using your vehicle's VIN number.
