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: I understanding 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? The use of vegetable oil for diesel fuel ...

It's no secret that gas is expensive, and very rarely does it decline in price for long. To counteract the damage done by fossil fuels, scientists are working hard to make it less essential for daily ...

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.