Problem with B20 is that it is 80% diesel. The issue is the same as with dino diesel. There was a place where I did lose fuel mileage. That means that not all diesel is equal. 80% of junk diesel could screw up the 20% 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