Originally Posted by Dana B.

Arguments against Bio-D:

1. Higher price.
2. Uneven quality.
3. Availability (50 miles for me).
4. If using 55-gallon drum, can't compute fuel mileage.
5. Will clog filters first several tanks.
6. Less power (BTUs) ---> less economy.
7. Bio-D buffs are a cult.

Bottom line: Bio-D doesn't pencil out.