The type of oil for a 2010 Dodge diesel depends heavily on the *specific* engine. Dodge offered several diesel engines in 2010 (e.g., the 6.7L Cummins). You
must consult your owner's manual. It will explicitly state the recommended oil viscosity (like 15W-40 or a CJ-4 specification) and any specific oil type requirements.
Using the incorrect oil can severely damage your engine. Don't rely on generic answers; check your owner's manual.
