Right i know there has been numerous discussions on the stuff but it mostly seems in relation to diesel made from used veg oil and i have animal fat or as it's usually known as beef dripping. Can i use it to run an alfa 2.4jtd or my ulysse 04 1.9jtd? I own a chip shop and have about 40gallons of used oil each week that i want to do something with. Can i make diesel with it that i can run my cars on or perhaps my central heating? Any help would be appreciated. I hate seeing this oil go to waste weekly.