You should be able to squeeze some good numbers out of that turbo diesel. I don't know about this, but have you ever thought of making your own bio-diesel? There's websites dedicated on how to make it, and most tell you to start with small batches of about a liter first to make it first before you make 40 gallons of the stuff. Problem is finding a cheap version of the things they make. and finding cheaper methane. But once you get started, diesel for less than 2 bucks sounds pretty good to most people.
