Biodiesel Blends

Yes, you can go from 10% to 100% bio-diesel at any time if your diesel engine can use ultra-low sulfur content. If it can not change a few parts (you will anyway), then you will not have a problem unless it is below 40 dege (f) (problem of gelation).

The reason you have to change the parts anyway, is that all diesel sold in the United States will be either low-sulfur, and some parts are like sulfer lubracant. You can replace these parts with those compatible with diesel ultra-low sulfur.

I run WVO diesel cheaper than organic.

Yes, you can change the biodiesel blends without compromising the machine. Diesel engines are naturally multi-fuel engine. You can fill the tank with diesel oil and when you run out of fuel, you can fill the tank with biodiesel (B100) and you should not notice a change. You can also add both (oil and bio diesel) in all proportions in the tank at any given time or go back with different blends of B10, B20, etc. ..

The difference between organic and fuel for Petro will not be noticed by most diesel vehicles on the road, unless you have an engine tuned and very sophisticated.

Some precautions to take cognizance of cases pending between the two:

1) acts of biodiesel as a solvent in the tank - so if you have a lot of sludge from years of use Petro, keep your tank, change the filters more often.
2) if you live in a colder climate, biodiesel can freeze (of clouds) at a higher temperature than diesel Petro.
3) whether the conduct of an old diesel that natural rubber hoses and parts (mostly before 1994), you must bring all parts of synthetic natural rubber - Natural rubber is only a problem if you use biodiesel blends more than 20% or B20.