The Millers XFE-PD is very good, Dad used to run it in his PD130 A6.
But it's so expensive! Stuff that, get yourself down to your local TPS (Trade Parts Specialist - Google them) and ask for either Quantum Longlife III or Quantum Platinum, both meet the PD approvals. It's about half the price.
Dad now runs Longlife III in the A6 and his T5 van (also PD) and I even put it in my car as it has the correct approvals for that too.
They may say Quantum on them, but Quantum is owned by VAG (even says so on the bottle), so don't let anybody tell you that Quantum is cheap oil.