</font><font color="blue" class="small">( It's a good thing the diesel I ran on vegetable oil didn't know that. It might have decided not to run. It did though and the exhaust did smell like something being deep fried.
FWIW, a couple of master degree candidates at MIT tested diesels on various vegetable oils for their thesis. At one time I had a copy of it. That's my basis for saying vegetable oils have a higher BTU content than Diesel fuel. That thesis was referenced in an article back in the 70's during the oil crisis. A professor at a college was running a diesel on alternative fuels. I like to look at actual source documents so I ordered a copy of the thesis from MIT.
I can probably locate the original magazine article and get the info to locate the thesis if you'd like to see for yourself.
I located the article in about a minute. Isn't the internet great!
http://www.motherearthnews.com/arc/2229/ )</font>
Here is what your RE says: It says nothing about the parimeters of the engine and what would or could of happned to it had this practice been continued!!
So, being a curious guy, I got on the phone to MIT and asked the folks there to send me a copy of the thesis ... fully expecting that it would describe some sort of complicated and expensive mechanical conversion that would have to be finished before the diesel could run on vegetable fuel.
However, the thesis didn't recommend any such thing. In fact, it stated that the authors had just poured the oil in and fired 'er up. "Well," I said to myself, "nothing's that simple ... there must be a catch."
So I picked up a gallon of diesel fuel and a gallon of soybean oil and took them to the college's shop. Dr. Donald Hudson—who taught the course in Advanced Power Mechanics—was as curious about my experiment as I was ... and he teststarted the shop's 600-horsepower Cummins turbocharged J-model diesel. The engine, of course, ran perfectly on diesel fuel.
Then, knowing that the Cummins was in working order, I disconnected the fuel lines, drained the tank, and—once everything was reconnected—poured in the gallon of vegetable oil.
The engine came to life with a roar ... and the smell of a hundred burning skillets filled the shop. It worked!
That successful experiment caused me to read further into the MIT thesis. The authors of that paper found that soybean oil actually produced more power — per pound — than did diesel fuel itself! Which seems to mean that the vegetable product would deliver more miles per gallon than would the petroleum derivative
---------------------------------------------------------
Now if that bit of scientific humor is good enough for you to advocate to others and even quote a flawed thesis as the basis of your claim, I can only say that my G/F just asked me what she should do with the old Wesson oil from her French fryer and I said save it and I'll send it to you guys to use in your tractors!! And I'll pay the freight!!
With all due respect and some Humor of my own to boot!!
Dean