Jeeze, B5 diesel gas isn't sold at very many places, which is the optimum fuel for the diesel PM. Am I missing something here? My search tells me:
Biodiesel is sold at regulare and alternative fuel gas stations, typically being called B20, B99, or B100. B5 is often sold in the winter in colder climates.
So, apprently most PM diesel owners will be not using the optimum diesel fuel unless they're driving in Alaska.
The PM diesel owner manual says:
Failure to comply with Oil Change requirements for vehicles operating on biodiesel blends greater than 5% but not greater than 20% (B6–B20) will result in premature engine wear. Such wear is not covered by the New Vehicle Limited Warranty.
In the maintenance chart, it says the Oil Change requirements for B6-B20 are:
Replace fuel filter and drain water from the fuel
filter assembly every 20,000 miles.