Biodiesel Barriers: Why New Diesel Engines Aren't Compatible With B100

Popular Mechanics

Dave Hubbard showed us how to turn grease from restaurants into fuel for his black Jetta TDI, a BMW motorcycle, bulldozers, tractors for five local farms and a tree nursery—all for the low cost of about 50 cents a gallon. Now this engineer and home-grown chemist has a warning for those who may try to follow in his footsteps: Watch what vehicle you buy. Pure biodiesel, once compatible with all diesel engines, now leads to problems in new cars.

By Dave Hubbard
Published on: April 29, 2009

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