Coconut oil works well in a diesel engine with good filters. That's only practical on isolated islands in the south pacific with an excess of coconuts. It is refined by burning the husks to boil water to extract a high grade of oil that floats to the top and is skimmed off.
Synfuel, of course, will work, it can be made to order for mean length. Synfuel has the advantage that some of it is wasted, which mostly ends up as locked up carbon. (Spills, evaporation, leakage into soil.)
Coconut oil works well in a diesel engine with good filters. That's only practical on isolated islands in the south pacific with an excess of coconuts. It is refined by burning the husks to boil water to extract a high grade of oil that floats to the top and is skimmed off.
Synfuel, of course, will work, it can be made to order for mean length. Synfuel has the advantage that some of it is wasted, which mostly ends up as locked up carbon. (Spills, evaporation, leakage into soil.)