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Originally Posted by azimuth
thankyou, that makes it more clear. i am also interested in the biodiesel or greasel (as i've heard it called). i have an acuaintance(sp) who is making a greasel out of an old chevy suburban. He says he can essentially drive with no fuel costs.
you seem to know quite a bit about it, what are the emissions as compared to common diesel?
is the benz motor design conducive to biodiesel conversion?
where do you get your grease and do you get it for free or what arraingements do you?
thanks for your time.
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Biodiesel is different than vegetable oil. Greasel sells a kit to run vegetable oil, there is no conversion to run biodiesel. The emissions are lower in every category for biodiesel over diesel (except oxides of nitrogen, which can be reduced by adjusting fuel timing). Vegetable oil emissions I believe are similar to biodiesel, but smell worse. Some people say, and I've not seen any documentation, burning vegetable oil releases more acrolein. I understand the level may be lower than what gosoline engines emit.
The Benz 616/617 is ideal for either fuel. I think it must be because MB delivered these all over the world to meet a variety of conditions, and the design is robust.
I get vegetable oil from a local Chinese restaurant for free. I have another source that is working well too, from an American food restaurant. I hear Mexican restaurants have more crap and fat in the oil, making it less useful...
Hope that helps. I can get you some links if you like, but you can also dig them up from similar posts in the diesel forums here.