Biodiesel guides
Straight answers on biodiesel, renewable diesel and off-road diesel, written from manufacturer manuals, fuel specs and DOE data.
Biodiesel vs diesel
Mileage, emissions, cost and cold weather compared.
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Can I use biodiesel in my truck?
Power Stroke, Duramax, Cummins, TDI — brand by brand.
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Renewable diesel vs biodiesel
R99 vs B20: chemistry, engines, cold weather, cost.
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Where to buy off-road (dyed) diesel
Dyed diesel: who can use it, where it's sold, what it costs.
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