Billet,
Try ordering the oil @
http://www.napaonline.com/
Order what you want, at the sale price, and have it shipped to your local NAPA store.
This has worked for me several times in the past.
What oil filter did they have?
Was it this one:
Mann Filter Part Number HU 718/1 k
If it was a NAPA filter or other than Mann Filter or Hengst you may not want to put it into your Sprinter.
Do some searches on oil filters.
If you have not taken your 2008 NCV3 to an authorized Mercedes Benz Sprinter dealer and had them run the full
diagnosis (including the TCM) then you don't have the whole picture yet.
You don't have to let them change your transmission, just do the diagnosis and then you clean the sensors based
on their diagnosis/analysis.
What did you use to come up with your DTC codes?
Hope this helps,
Roger