I thought valve stem seals are only puffing blue smoke on startup?

I'd take out the pipes to the turbo and check the shaft for endplay. See if you can rock the impeller and make it move. I am thinking that it is your turbo.

B100 shouldn't cause that sorta thing unless you got some bad biodiesel.

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01 Ford Excursion Powerstroke
99 E300 Turbodiesel
91 Vette with 383 motor
05 Polaris Sportsman 800 EFI
06 Polaris Sportsman 500 EFI
03 SeaDoo GTX SC Red
03 SeaDoo GTX SC Yellow
04 Tailgator 21 ft Toy Hauler
11 Harley Davidson 883 SuperLow