grywlfbg wrote:
Million dollar idea.... Come up w/ a business plan to the big fast food chains to take their grease (they won't give it to people now... health reasons) and convert that into bio-diesel, you'll make a killing. I bet they'd give it to you free if you took it all, from EVERY site. So there'd be some up-front investment obviously. But I assume they have to pay for it to be hauled away today. If you did it for free it would benefit them and you could sell it for $3/gallon. Hmmm...?
You are a few years behind. This is already how a good portion of commercial Biodiesel is made. Just here in Oregon we have a refinery producing BD from waste oil, and another under construction.
There is a plumbing company that has contracts to pick up the waste oil from all over the place, and then the BD company buys it from them.
http://www.mrsharkey.com/qfuels/plantmsn.htm
This is being done all over the place...
We have been running our Volkswagen TDI on at least B20 for 50,000 miles, and we have been running our CRD on at least B20 sine purchase, now with 3500 miles. For the last few tanks we have been using B100 as it was 10 cents cheaper ($3.01) than retail petrolium diesel in our area...
My advice is stay away from home-brew. Make sure to use only ASTM certified commercial BioDiesel. While home-brew may seem enticing, quality control is a big concern. While older diesels are more tolerant of bad fuel - I would not expect the same from the modern high pressure injection diesel engines for sale today...