diesel x5 feul problem

[georgeskype]

I just got an X5 DIESEL. I am told by the dealer to fuel it with Ultra Low Sulfer Diesel. The problem is that I am planning to ship the car out of country, but aparently the destination country has a different sulfer level diesel.
I did some research, the Ultra has a 15ppm sulfer content, my country offers a 50ppm sulfer diesel, the Euro IV standard.
Does anyone know if my car will run ok? I dont want to damage the engine. The regular diesel in the US has 500ppm, and my dealer says dont fuel the car with it unless I have to, but only do it once in a long while.
Thanks for the help.