D2 is a refinery abbreviation for Gasoil. It is the second distillate from the crude oil, and can be used without reformers and additives. The principal difference between GASOIL and D2 is the content of sulphur. ISO has a standard for D2 that most of oil companies use as their reference.
Jet fuel, Aviation Turbine Fuel (ATF), or Avtur is a type of fuel designed for use in aircraft powered by gas-turbine engines. It is clear to straw-coloured in appearance. The most commonly used fuels for commercial aviation are Jet A and Jet A-1 which are produced to a standardized international specification. During the refining process only 8% of the crude oil is made up of Jet fuel.
Liquefied Natural Gas (LNG) is natural gas, cooled to minus 161°C until it becomes a liquid. It is stored under atmospheric pressure and reduced in volume by the ratio of 1:600. It is easier and less costly to transport, particularly where access to pipelines is not available.
LPG (Liquefied Petroleum Gas) is predominantly propane and butanes, either segregated or in various ratios and mixtures of each product. LPG is a by-product of crude oil production (Associated Gas) and a by-product of natural gas production (Non Associated Gas).
D6 is also be known as Residual Fuel Oil and is of high-viscosity. This fuel oil requires preheating to 220 – 260 Degrees Fahrenheit. D6 is mostly used for generators. D6 is a type of residual fuel, mainly used in power plants and larger ships. The fuel requires to be preheated before it can be used.
EN590 (10PPM ULSD) had been introduced along with the European emission standards. With each of its revisions the EN 590 had been adapted to lower the sulphur content of diesel fuel - since 2007 this is called ultra low sulphur diesel as the former function of sulphur as a lubricant is absent