Hello, appreciate your wisdom here so I know where to start (or give up).

First symptom was noise from rear transmission tunnel - metallic/grating obvious under load not when free wheeling. Then a little smoke/exhaust smell. Came to a stop and visual inspection nothing was obvious.

Restarted and saw more white smoke so headed straight home - under 2k rpm/30mph; a few climbs created large plumes and you could feel power loss.

Covered 9 miles like this (maybe stupid but had no real choice in countryside here in France). Last uphill to home looked like I set the village on fire but made it to my gates, then the STOP ENGINE OIL PRESSURE warning. Shut down straight away. Dipstick dry. Coolant average level, no obvious mayo.

It's a 2004 3.0d 184bhp, last checked oil level 2 months ago, no spills.
INPA's not working so no clues there yet.

Any pointers will be very welcome thanks