The manual will specify the type of fluid (e.g., ATF+4, Mercon, etc.) and may also recommend a specific brand. Using the incorrect fluid can severely damage your transmission.
If you don't have the owner's manual, you can try:
* Checking the transmission dipstick: Sometimes the recommended fluid type is printed on the dipstick itself.
* Looking up your VIN: Use your vehicle's Vehicle Identification Number (VIN) on the Dodge website or a reputable parts website to find the specifications for your specific truck.
Don't guess! Using the wrong transmission fluid can be very costly. Always refer to your owner's manual or consult a Dodge dealership or qualified mechanic.