Yep, make my own, biodiesel, for the last 3 years. Run it in my 24v Cummins, 12v Cummins, sometimes in my Kubota.
The Methanol is the most expensive thing (last time I got it the price was 5.14 a gallon). The next most expensive thing is your time, collecting the oil, filtering, processing, washing, filtering some more, storing. The Lye or Potash is negligible in cost.
The other pain is getting a good supply, as resturaunts vary in their oil quality. Some fry zuchinni and the crap that is left in the oil, well I don't even want to try to process it. Others use the oil so long that it takes extra time and procedures to get the oil to a quality that wil process into biodiesel. Many also put water into the oil, whether it's from leaving the lid off the container in the rain or washing the last of the oil out of the fryer and dumping all of it into the container. These things make you have to spend more time in messing with the oil.
You'll need several resturaunts, unless you can find some place that uses enough quantity to fulfill your needs, and you have time to process that amount. For instance, I won't be using it in my bucket truck any time soon, because if I did I'd need several more resturaunts, and a few more hours in the day to process it just to keep up with how much the truck uses.
The only real issues with mine is that when the temp gets around 30 degrees it gets kinda thick and gells around 20. If above 30 degrees I can run B100 (100%) with no problems. I am trying to increase the quality so the gell point will be lower.
I have never messed with running straight WVO because I don't want to deal with the duel fuel systems and heating one of them.
Chris
if
