Biodiesel has a Cetane of 50, regular diesel is 40, so it is a little thinner.
You get about 80% power from bio verses regular diesel.
There are three main types, Under 20%, Over 20%, and 20%...
Under 20% is used as a lubricity agent, Ultra Low Sulfur Diesel is stiff, and biodiesel up to 20% is used to make it flow better. Emissions are a little better, and there should be no compatibility problems.
Over 20% has a few problems...
The first, it can act as a cleaning agent on your fuel tank
All the sludge left behind by regular diesel gets loosened up, and can clog your fuel filter, .
Watch "This Old House" on PBS where they remove a home heating oil tank from a basement.
Sludge on the walls and bottom of the tank looks like pudding,
The local food service company ran 100% bio in a few trucks as a test,
they went through three fuel filters on most trucks before the sludge was cleaned out...
After that, they ran fine.
100% bio can have a bad effect on gaskets too.
The higher Centane can dissolve old (made before mid 1990's) gaskets, however most modern tractors use material that is proof to the solvent effect.
And then there is 20%
20% is the magic number for percentage of emissions decrease..
that is if you plot out how much the emissions improves as more bio is added,
it works out to a bell curve
Your fuel filter may look a little gunky, but it should run with no compatibility problems in a machine built after the mid '90's