citfta wrote:
Hi guys, Sorry to break the bad news guys but it is not that simple. Jatropha is an excellent oil to use for diesel engines. However it must first be converted to biodiesel if you don't want to destroy your engine. My son and I have been using biodiesel for over 6 years now. My son first started with straight used vegetable oil and the heat system that you have to add to your car to get the oil hot enough to go through the injection pump. After about 10,000 miles the engine was junk. He learned the hard way that straight vegetable oil has long molecule chains that will not burn completely. This leaves carbon in the cylinder which eventually builds up to destroy the engine. He has a friend who destroyed a very nice Mercedes engine just like the one in the video because he ran straight vegetable oil in it. The guy in the video never says he makes biodiesel from the plant oil so I don't know what he was running in his car. He does however made a statement in the comments that I am sure is false. He states he gets 40-45 miles per gallon on vegetable oil verses 27 on regular diesel. I have a Mercedes just like his except mine is an 84. I get slightly less milage on biodiesel than I do on regular diesel and so does everyone else that uses biodiesel. But my car runs smoother and doesn't smoke at all and the biodiesel I make myself costs me half as much as I would pay at the pump for regular diesel. By the way plant or vegetable oil can only be used in diesel engines. If the oil could be fermented in some way to make ethanol then it could be used in a gasoline engine. So the bottom line is if you want to use plants for fuel you will have to have a way to process it into biodiesel or ethanol. Since the process for making biodiesel is much simpler my son and I went that route. I hope this information will keep someone from destroying an expensive engine.
Good luck, Carroll
Thanks for your input.
I know of one guy who is running it this way.
Another location has modified engines to run it straight.
YouTube - Jatropha Plant Winrock Succes Story self supporting village Ranidhera India posted by Gino Smit - Youmanitas Energy Farms Foundation
These are not car engines, and perhaps more forgiving than a car engine, but I am trying to get as simple as possible.

