Low Sulfur Gasoil acc to Gost 305.82 Origin. Russia. D2 is a broker terminology born of a Distillate Fuel,Gas Oil Diesel. Specifically,the Russian standard GOST 305.82,wich is Ultra Low Sulfur with maximum sulphur content of 0.02 percent.Just 10 years ago low sulphur was less than 4%.D2 or GASOIL is traded on the besis of a Metric Ton.7.3 Barrels equates to One Metric Ton and so does 304 gallons.These figures are set by the oil comapnies,since the formula will vary with temperature and the weather (preasure)