by Guest » Tue Apr 26, 2005 6:08 pm
You have to know the density or specific gravity of the fuel, which varies from gasoline, to fuel oil. But the specific gravity is usually between 0.7-0.9. Crude oil (unprocessed) is more likely in the range 0.8-1.
Using 0.8 as a rough estimate figure 800 kg or 0.8 metric tons per cubic meter. If you need a more precise figure, you have to get a density value for the fuel.