* Check your owner's manual: This is the most definitive source of information for your specific truck. The manual will specify the recommended oil viscosity and type (conventional, synthetic blend, or full synthetic).
* Climate: If you live in an extremely cold climate, you might consider a 5W-30. For extremely hot climates, a 20W-50 might be suitable, but again, check your owner's manual first as using an oil outside of the recommendations could void your warranty (if applicable).
* Oil Type: While 10W-30 conventional oil was standard in 1997, using a synthetic blend or full synthetic oil is perfectly acceptable and often offers better protection and longer drain intervals. However, stick to the viscosity grade recommended in your owner's manual.
* Mileage: Higher mileage engines might benefit from a higher viscosity oil (like a 10W-40 or even a 20W-50, but only if recommended) to help compensate for wear. Again, check your owner's manual for recommendations related to higher mileage.
In short, start by checking your owner's manual. If you can't find it, a 10W-30 conventional oil is a safe starting point, but verifying with a Dodge dealership or a trusted mechanic is always a good idea.
