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I've found that when my oil comes with alot of flour in it it holds on to water very well. Get the flour out and you have dry oil. I guess I'll put in a shameless plug for the dieselcraft centrifuge. The oil i get is the nastiest stuff there is in regards to flour but titrates well. When I first get the oil you can heat it up to around 160F and you can't even begin to see through the oil. If you try to make biodiesel with it it turns into sludge.
The oil is good condition once you get through all the flour and dries out really fast using the centrifuge. After just a couple hours the stuff looks like virigin oil again. To process it with the heater element on and the centrifuge pump going it comes out to 3 cents per gallon to purify the oil, and requires no settling time, i just pick it up, bring it home and start processing.
Last edited by yaric008; 02-05-2008 at 11:10 AM.
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