I was going to start making it myself, but I read in the news that they are building bio-diesel plants all over the country. The way I see it the government is going to step in and take the waste oil for thereselves. They'll probably make it an EPA regulation saying that unlicensed people will not be able to collect waste oils due to the risk of enviromental contamination. Then the license will be so hard to get that it wont be worth it. Either way I'm not sure us common folks will be able to get our hads on the oil in the near future so I kept my money in my pocket.