What is the difference in cost to produce diesel fuel versus gasoline? Does one require more oil than the other? [more inside]
posted by Reverend John on Mar 24, 2008 - 13 answers

What car models are best for biodiesel? Anyone done the full conversion to vegetable oil? [more inside]
posted by jruckman on Feb 8, 2007 - 16 answers

Why is biofuel diesel, instead of standard gasoline? [more inside]
posted by yesno on Jul 7, 2006 - 16 answers

I love my car, but am becoming increasingly concerned about gas mileage and environmental responsibility. It isn't a guzzler, but I know I could do better. What are your experiences with diesel cars? [more inside]
posted by odinsdream on Mar 17, 2005 - 11 answers