Sorry to disagree with you Adrian.
My mate bought a brand new Peugeot HDI diesel about six months ago.
Being used to petrol he was carefull for about a month, then got slack, he put =A320 worth of petrol in the near empty tank, after realising what he had done, he filled to the brim with diesel.
Driving home he made it about 6 miles, this probabally being the filter full and the lines, then the car just stoped! no noises or stutters, he says it was just as if the ignition was turned off. He tried to start it but no go.
Then came my phone call, I went out and pulled him home.
We drained out the tank, lines and the filter bowl, Re filled with with fresh deisel and it started first turn of the key, not what I was expecting.
Using this car as a taxi, he has now done about 20'000 trouble free miles in it.
So sorry it wont allways balls the engine up.
My only thoughts are that the electric probes and magical bits envolved with the modern common rail engines, picked up the wrong signals from the exhaust and shut the engine down.
Waddaya think????????
Regards Slim