|This test was to try to remove soot from used engine oil using diotomacious earth pool filter medium. I assume it did remove some as the oil flow reduced considerably over the 1 hour test but the oil is still totally opaque and coal black. Ambiant air temp was mid 70,s F. The weather has turned cool but I will try another 5 gallon through this same filter when the temp gets back to the same mid 70's F.|
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