B20 is still 80% regular diesel so anything can be up with that. I have dumped B100 into my tank and mixed it with fuel to make a B40 mix and never noticed any difference in running other than the mileage went down a little. When I used fuel at this place, it sucked. Changed and it ran right again, changed back and it sucked. You get the picture. I'd say you are best off if you can test it with your regular fuel then add B100 in it. Some have said it works better and I haven't seen it better so, as they say YMMV.

__________________
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