To find out how much oil your specific Dodge Cummins needs, you should:
* Check your owner's manual: This is the most reliable source of information. The manual will specify the exact oil capacity for your truck.
* Look on the oil fill cap: Sometimes, the recommended oil capacity is printed on the oil fill cap itself.
* Consult a reputable online parts store: Websites like AutoZone, Advance Auto Parts, or Napa Auto Parts allow you to search by year, make, and model to find the correct oil capacity for your specific vehicle.
Do not attempt to guess the oil capacity. Using too much oil can be just as harmful as using too little.