I work with a guy who has the 7.x Ford Diesel, I have a 2008 and he swears he is making diesel for $0.90 a gallon. He spent $800 in equipment and has offered to teach me how to do it. Before I spend the money and the time I was wondering if anyone here is/has done it and what the pros and cons are (Other than $0.90 per gal).

Thanks.