I was not referring to the factory recommended oil.
Also 10k miles is too long for oil change when you have such a small oil filter. I change at 7k and use Amsoil
If you compare the Bluetec crank, rods and main bearing width to the Eco diesel you will find the 2mm narrower bearing surface is probably the culprit with bottom end failures. FCA needs to redesign and lengthen the block to accommodate a wider bearing design.
I am sure the lower grade motor...