hello sir/madam
my name is smriti, i am a final year mechanical engg student and looking for a project to submit in the college. I want to ask that what can be different eco friedly fuels for automobiles and how can i make a suitable fuel. I have theoretical ideas about all these but never made made some practical experiment. so, pleas tell me how can i proceed.

You can use bio- diesel made from mixer of a Jathropa seed oil and diesel.