If you can run SVO through a diesel engine at the right temp., it shouldn't be difficult to treat that oil to have a lower viscosity.
The additives probably do a quick de-esterfication of te oil and solidify the gylcerin. The filters that the web site mentions probably capture the solids and the rest is bio-diesel. Since it happens in a single container and is pump through a filter, you don't have to worry about it cloging things in the vehicle.
This reminds me of the South Park episode with the knomes.
"Step 1... collect under pants.
Step 3... make profit
What about step 2? We haven't figured that out yet!"
I am very interested in the results. Please keep us informed.
Alex