Looks like the engineers of the VM 3.0 EcoDiesel has changed the oil requirement to a API CJ4 5W40. You may want to consider this change on your next oil change. Copy/Paste Engine Oil We recommen...
Its in the on-line Ram trucks owners service manual... I selected 2015 and 2014 model and they both on page 103 have the oil specification. The recommendation is now 5W40 and no longer is a 5W30 is specified.
