It is no where near as efficient. Most biodiesels are still in the mid twenties in miles per gallon.
Since you are burning used fry oil most of the time, which is free most people are not all that worried about the efficient. Note that here in New England you can really only use this 3/4 of the year, as in the winter the fry oil congeals into a solid mass. Still it can save you a remarkable amount. Note that in the -20F range you need to start running kerosene, as diesel starts to gell.
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timeasmymeasure
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Date: 2005-07-20 01:49 pm (UTC)Since you are burning used fry oil most of the time, which is free most people are not all that worried about the efficient. Note that here in New England you can really only use this 3/4 of the year, as in the winter the fry oil congeals into a solid mass. Still it can save you a remarkable amount. Note that in the -20F range you need to start running kerosene, as diesel starts to gell.
There are some amazing diesels coming out in the near future though with up to 70mpg... http://www.msnbc.msn.com/id/8129979/