A Scandihooligan I know has run a series of Mercedes on the Jet A they have left over after doing the water and sediment checks every morning. He said the Mercs have a separate oil system to lubricate the injection pump so that they don't seem to mind the diet of Jet A at all.
A VW diesel needs about one quart of straigh mineral oil per one barrel (44 Imperial or 55 US gallons or 209 litres)of Jet A, on the other hand.
Some countries have changed their tax system, taxing diesels at a higher rate, so that they don't bother chasing tax-dodgers using alternate fuels. Well, that's what I was told, anyway.
Here in Germany the VW diesel can go all leaky on a diet of bio-diesel, even, since the seals in the high-pressure section are very senstive to some chemical found therein. The modern common-rail systems run something like 3,000 PSI, so that caution is advised when choosing fuel. Read the fine print in the owner's manual, I guess. One of my friends had to buy a new pump due to this.