I ran across a site that advertises a way to make biodiesel no. 2. They claim that this fuel can run in place of diesel fuel in any engine. It uses vegitable oil from local restaurants, cleans it nd mixes it with an additive. They advertise that once this is done it can be pumped right into your truck and runs just like diesel. As of now I am a skeptic and need to learn more about it before I try it. Any information you all have would be greatly appriciated. The website is Biofuel Basics : Revolutionary new biofuel that runs cleanly in any diesel engine without engine modification!. Thank you for your help.