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Used oil form gearboxes, engine crankcases and transmissions that originally came form crude oil contain carbon that was collected from the atmosphere eons ago by plant life. The farmlands all across the United States are in bad need of carbon.

Processing these waste oils in proper built digesters using special microbes can completely clean up the used oil and turn it into plant foods.

Waste oil from the North West part of the country and from Texas that was processed with slightly different digesters in those two locations, but using the same microbe tested the same day at the same lab in San Antonio, tested slightly different in plant nutrients but both tested clean of any toxic or harmful metals.

Processing and using waste oil in this manner is probably the most environmental sensible way of disposing it.

None of the carbon is lost back to already over burdened atmosphere, but instead waste oil can be used to grow plants that take carbon from CO2 in the air and release oxygen back.

In my greenhouse and in the garden I grew healthy plants using only the liquid from the waste oil digesters, no other fertilizer. I use it heavy, 1 pt. Per gallon of water or light, 1 tablespoon per gallon. Rates do well, I even used some 100 percent on four plants and they did well, no burning or any harmful effect.

I also sprayed it on tomato plants that were covered with aphids. It knocked some off but not completely. I believe at the correct dilution, probably more concentrated, it may be a fair non-toxic pesticide.

Time hasn't permitted me to do all the testing necessary to find the correct amount for each plant, environment and such. I don't think you could over use it and hurt plants.

The only problem I have found is the slow process or time it takes to digest the oil. However, I am sure this could be overcome with enough research.

Malcolm Beck


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last updated:  February 9, 2004