I have now had my 2015 Dodge Ram 1500 Ecodiesel for 2 days. (Needed a truck in a hurry, and bought this one). I drove 300 miles today on the freeway and then all of a sudden the ECT light comes on. Still able to do 80 MPH, still able to rev to 4,000 RPM but I did notice lack of power.
So...