I also have the 3.0d and never had any issues with it. I don't use truck pumps (with the large bore nozzles) as they won't fit in the filler neck. The standard diesel pumps here in NZ will fill my ~93l tank from near-empty to full in around 3-4 minutes. It's certainly slower than filling a petrol car but it's certainly not anything like 10 minutes.
The filler neck hoses are pretty small - this tank will never fill VERY fast...