55-gallon drum with water heater element installed near the bottom.

3 filters made out of old jeans (about 5 microns) going into 3 1-micron absolute sock filters.

Let the oil heat for about 8 hours. Turn the heater off and let cool for about 4 hours before pumping.

Pump a small amount in a pan for the pan test. If too much water, heat longer. Otherwise, pump into car.

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'79 300SD
'82 Chevy Chevette diesel