A nice demonstration of cold-weather performance. Renewable fuels like biodiesel can help reduce dependence on foreign oil. Most of all, we’d hope that those using soy-based biodiesel or other forms of biodiesel fuels make sure you know what you’re getting and what your vehicle/engine manufacturer frecommends for the permissible blend percentages. New quality specs just adopted last year (D6751) will help; many 2009 model clean diesel cars are not endorsing use of any biodiesel products due to the more sophisticated emissions control systems. Some OEMs allow for up to B5. More info at .


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