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I think it will be amazing to avoid all the bills if you can get the oil. Unless you run a shop and have tons of used motor oil, run a restaurant and have tons of vegetable oil, then you will have to invest in equipment to collect oil. I wouldn't go so far as getting together the equipment and the deal with oil users. I would just buy used oil. Couldn't a local garage sell it to you and then you just run it through a filter? How fine does it have to be filtered?
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