FYI, I built a processor for wvo or wmo. It consists of a 55 gallon drum that has the bottom cut off and a sheet metal cone welded on. It sits on 3 angle iron legs. At the bottom of the cone is a 3/4 inch pipe thread coupler and up about 10 inches on the cone is another 3/4 inch coupler. I took a 60 gallon per hour centrifuge and mounted it to the top of the barrel and have a gear drive pump that pulls the oil either from the bottom port or the higher one depending on my needs. I dillute the wvo about 10-20 percent with regular gas, then prefilter through screen and pour into a plastic cone shaped container that holds 15 gallons. On the bottom of this container I have a 100 mesh stainless steel screen in a housing with a drain on the bottom. The wvo goes from this container to a holding tank and then to the processor I made. I centrifuge the oil for about 4 hours or until the rotor comes out clean. This system works great, and I haven't plugged any filters in months.
For the wmo, I pump it into my processor, add some diesel or gas to the oil to thin it out and start centrifuging. Yesterday I did a 60 gallon batch and fuged it for about 8 hours and the result was very clean semi transparent oil. I cleaned the centrifuge about 5 times and finally it came out clean. The centrifuge also collects any water that might be in the oil, so it is important to clean it often. One word of caution, don't mix the processed wvo with wmo, it forms a laquer that will plug filters and create havok. I don't try and run these blends straight in my duramax, but I have run them between 10 and 50 percent with no issues.
