B5 B20 or B100?

You know, when most people think of biodiesel, they probably think it's 100% made from soybean oil. The truth is, biodiesel comes in different blends and is most often mixed with regular diesel fuel. The reason for this is due to the fact that biofuels tend to "gel" more easily in the winter and require special additives or vehicle modifications to keep the gas tank, fuel line and fuel filter warm. A B5 or B20 blend, however, should operate just fine in all but the coldest weather conditions. In these cases, an anti-gel diesel fuel additive should be sufficient to keep the engine running.

Note: VW has authorized use of B5 blends in its diesel cars. See
article.

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