Throwing Brickbats At Big Oil's Recycling Act

American consumers long have lacked an environmentally sound way to dump used motor oil. Many simply send it down storm drains, leave it for the garbageman to take to a landfill, or use it as weed killer--all of which pose threats to groundwater. To solve the problem--and give public relations a boost--Amoco, Mobil, and Exxon lately have been offering to do the public a favor by recycling used oil.

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