Here is some stuff I copied and pasted from another site:
This is why it cleans out the fuel system (Xylene and Napthelene).... The main two chemicals in most fuel additives that failed the HFRR testing...
Xylene is a excellent paint thinner and solvent. Its used in many cetane boosters and injection cleaners.
Napthalene is also used in fuel anti-gels, injector cleaners, cetane boosters.
Here is more information on fuel chemicals...
http://mopar.mopar1973man.com/2002-d.../chemicals.htm
Here is more information about some common additives... (Compare notes here...)
http://mopar.mopar1973man.com/2002-d.../msds/msds.htm
Both chemicals will greatly reduce the BTU value of the fuel as well as degrade the lubricity of the oil depending on how much of the chemical you used.
Basically I would see as keeping the WVO from turning solid rapidily. (Like bacon grease at room temp). It not going to remove the fatty acids, etc from the WVO. So basically it would still coke up the injectors.
There was a Dodge owner that was running homebre B100 and dumping WVO in his fuel. To this day it's costing him $3,200 bucks to replace all 6 injectors, 1 VP44 and a 1 Lift pump... The WVO turned solid on him in the fuel system and distroyed the pumps... ( I can't help to laugh about it!!!)