Schulte demonstrates homemade filter system
February 22, 2009 | 4:24 p.m. CST
Scott Schulte demonstrates his homemade straight vegetable oil filter system in the garage of his Columbia home on Feb. 13. Schulte, a retired park superintendent of the Rock Bridge Memorial State Park and a section of the Katy Trail, buys old cooking oil from restaurants in the area and filters out impurities and solids to fuel his 2006 Chevrolet Duramax pick-up truck. Since January 2008 Schulte has also been running a business called Biofuels, where he sells the purified vegetable oil.
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