A Footnote On Education...
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Fuel Up Your Diesel With Biodiesel Blends.
If you have a diesel car or truck, look for a gas station that offers a biodiesel blend, which requires no modifications in your engine.
There is a growingt number of these all over the place. Diesel engines are up to 40% more fuel-efficient than petrol ones, and biodiesel emits 78% less carbon dioxide (CO2) than petroleum diesel, as well as less carbon monoxide. The good news is that blends of 5%, 10% or 20% biodiesel, with the remainder petroleum diesel, can be burned as-is in existing diesel engines, so you don't need to do anything different. These fuels are called, respectively, B5, B10 and B20.
Also note that, except perhaps in the very coldest climates, biodiesel blends up to B20 can generally be used year round. Pure biodiesel gets too viscous at low temperatures, and requires dilution or a special warming kit installed in your vehicle.
Ideally, choose biodiesels that are made from recycled oils, which consume a waste product, instead of those that are made from dedicated “fuel crops†like corn or soybeans. Given industrial farming's intensity, the energy economics don't favou the later type.
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