This is a timely post. Tried to find two quarts of the Pennzoil today, first two dealers I called (one where I purchased) said FCA called for the 5W-40, one had Rotella in stock, the other said it was Pennzoil. Since I was already driving around, stopped at a third dealer, and he had the Pennzoil Platinum Euro L 5w-30. Got two quarts to carry on my first road trip, will do about 5000 miles in the next 2.5 weeks.
As a side note, I do have the diesel supplement (had to ask FCA for all the manuals dealer didn't give me) and got confused as the 2500/3500 section does call for Shell Rotella. All this back and forth is most likely about standardization. I've always used Pennzoil in all my vehicles and when it comes time for service will take it back to dealer #3 and see at that time what they are using. Stay tuned.
As a side note, I do have the diesel supplement (had to ask FCA for all the manuals dealer didn't give me) and got confused as the 2500/3500 section does call for Shell Rotella. All this back and forth is most likely about standardization. I've always used Pennzoil in all my vehicles and when it comes time for service will take it back to dealer #3 and see at that time what they are using. Stay tuned.