Good old Mother Earth News just had an article on this, and the
reference below to a book on the subject.  Not just for hippies anymore?

http://motherearthnews.com/altenergy/altenergy175.van.middle.html

To order "From the Fryer to the Fuel Tank: The Complete Guide to Using
Vegetable Oil as an Alternative Fuel." (GreenTeach, $24.95), call
1-800-266-5564.
--
Stuart MacMillan
Manager, Case Program
800-909-8244 ext 208

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