Home mechanics have been pouring vegetable oil into engines for years, sometimes in the fuel tank, sometimes straight into the crankcase, and often with a camera rolling. The appeal is obvious: a ...

Dear EarthTalk: My understanding is that you can run a diesel car on used cooking oil. Why would I want to do that and how would I convert such a vehicle to do so? — Benjamin Crouch, Boston, Mass. The ...

WACO, Texas (AP) -- There's a reason David Cole's diesel pickup truck smells like fried chicken. It's fueled by the glistening, golden waste oil of a restaurant fry pit. Every two or three weeks, Cole ...