Re: peanut oil

Posted by Bob M on February 22, 2003 at 15:50:13 from (66.66.123.133):

In Reply to: peanut oil posted by AZglide on February 22, 2003 at 12:42:29:

AZ - The story you heard sounds legitimate. When I was in engineering school (early 70's) we had a single cylinder Fairbanks-Morse diesel engine in one of the dyno labs. I ran a series of experiments looking at the relative engine performance on various alternative fuels. Used "fuels" like peanut, cotton seed, soybean and corn oils, Wesson oil, melted Crisco, etc. Don't recall the particulars 30 years later, but do remember the engine ran fine on every one of the oils, and that fuel economy and maximum power varied with the BTU content of each oil...as you might expect. I however vividly recall the variety of exhaust smells. A couple test runs generated exhaust that smelled like you were downwind from a McDonald's!

Bottom line is you can definitely run a diesel on peanut and other oils. However there's many unresolved issues: The cost-effectiveness of using these oils, wear characteristics on injection pumps and other engine parts on these oils, emission characteristics, and cold start characteristics (in my experiments we always started and warmed the engine on diesel, then switched over to the test fuel). Another potential issue is that of the fuel going rancid while in storage or, inside the engine when it sits idle for a while.

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