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What is Biodiesel?

From Christine & Scott Gable, for About.com

Biodiesel is an alternative fuel formulated exclusively for diesel engines; it’s made from vegetable oil or animal fats.

Biodiesel can be mixed with petroleum diesel in any percentage, from 1 to 99, which is represented by a number following a B. For example, B5 is 5 percent biodiesel with 95 percent petroleum, B20 is 20 percent biodiesel with 80 percent petroleum, or B100 is 100 percent biodiesel, no petroleum.

Produced in accordance with strict industry specifications, commercial biodiesel that meets ASTM D6751 is legally registered with the Environmental Protection Agency as a legal motor fuel for sale and distribution. Biodiesel also has a following of home-brew enthusiasts.

Pros: A Yes Vote

  • Cleaner than diesel: Biodiesel reduces emissions of carbon monoxide, carbon dioxide, sulfur dioxide and particulate matter.
  • Renewable: It’s plant based, therefore what is used can be re-grown.
  • Support of local agriculture: It’s another way to support your farmer.
  • Longer engine life: Biodiesel is a natural lubricant.
  • Pleasant exhaust smell: When burned, the fuel emits a fried food or barbecue aroma.

Cons: What to Be Aware of

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