I used to run my truck on a 50 cents per gallon fuel using an easy vegetable oil blend! This book teaches you how to do it as well as how to build a veggie oil filtering/dewatering unit with common materials for less than the cost of a tank of fuel! Hundreds of hours of research, trial & error, detailed information, concise pictures and diagrams and built into to this very handy must have resourse. Warning. This book is very picture heavy and some of the images may not display well on your particular device.