tible, like removing the cat. converter and doing great things to make it good did you?

the obstacles of using this kind of ENERGY

I live in the tropics Jamaica wil it work for me

I made my own biodiesel from cooking oil and i need to show to friends that it is real biodiesel. Is there anyway I could test this besides just saying "this is the real thing guys", and besides putting it into a diesel based engine (im only 16 and dont have a car)

but can engines that have been been burning traditional fuel be flushed out to then burn biodiesel? is there any process to make the switch or can biodiesel be pumped in without any preperation?

to the ecosystem only…..

How can I convert my 1986 6.2 4×4 suburban to biodiesel?