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We have a 2000 Ford Diesel Excursion and are considering converting to biodiesel fuel. Are there any special conversions we might have to make before we begin using this product? What type would be best to use...B20 up to B100? /ubbthreads/images/graemlins/shrug.gif
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It sounds like you are making a very common mistake: You are confusing "biodiesel" with other organic renewable fuels (WVO & SVO/VVO).
Straight/Virgin Vegetable Oils are any cooking oils that have not been used to cook with. Waste Vegetable Oil (including lard & shortening) has been used to cook with & no longer tastes good. These oils can be burned in a diesel engine, but commonly need to be heated prior to going to the fuel pump to make them flow right - hence the conversion necessarry. They also have been used "cut" w/ #2 diesel and or kerosene & Regular Unleaded Gas (not something I'd use in a newer high pressure injection system).
Biodiesel is a vegetable oil base stock that has been processed to remove Free Fatty Acids (FFA's). This is transestrification (the "brewing" process) that uses a lye/alcohol mix (methoxide commonly) to remove the FFA's in the form of glycerol, a non-toxic, biodegradable goo used in soap/cosmetic manufacture & animal feed.
Biodiesel is very close in chemical properties to regular #2 petroleum based diesel, with a higher cetane level and greater grease cutting properties. It is bio-degradable, non-toxic, and a good degreaser, as well as fuel. There is no need to modify a diesel engine to use biodiesel. However, on engines made before about 1997, the biodiiesel will attack the natural rubber hosess & seals in the fuel system. anything after 97 & you should be good to run w/ no worries, othere than it will clean your fuel system of stuff left by #2, so you will probablly need a new fuel filter in few 1000 miles.