What is biodiesel? . . .

Biodiesel are a substitute for petroleum diesel that can be made
from plant & animal sourced oils. New or used oils (as in waste cooking oil)
can be used & the fuel (biodiesel) produced is better than regular diesel
in many ways.

The science behind biodiesel & the DIY (Do It Yourself) procedures
for making it at home using a process known as esterification
is not covered in this website. The following links and many others
provide substantial information:

http://journeytoforever.org/biodiesel_make.html

The author has successfully used the procedures described
in journeytoforever for “used cooking oil” & for “new coconut oil”
and recommends them.