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Ask Umbra on biodiesel vs. straight veggie oil August 17, 2005 10:37 PM

Ask UmbraWednesday, 17 Aug 2005

Changes of Engine
Umbra on biodiesel vs. straight veggie oil

Mechanic. For every one person who's running her car on french-fry grease, there are approximately 57,682 others out there who want to. At least, that's how it looks from here, as questions on the topic pour in. Today a reader asks Umbra which is a better choice for her diesel Mercedes, biodiesel or straight vegetable oil. And Umbra gives a road-tested answer: it all depends.

new in Ask Umbra: Changes of Engine


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