Not harder, shops love to take advantage of a diesel, and up charge for it. Everything you need to know about oil changes:
https://www.ecodieselram.com/forum/threads/ram-ecodiesel-oil-change-information.318/
Welcome! I think we have a few here, but the biggest gain for a EcoDiesel is a full tune to help with potential issues down the road.
We've got a ton of threads on that here: https://www.ecodieselram.com/forum/forums/ecodiesel-performance.28/
Welcome.. moving this into the Performance section.
We've got a ton of threads with some options for you:
https://www.ecodieselram.com/forum/forums/ecodiesel-performance.28/