D2 is a refinery abbreviation for Gasoil. It is the second
distillate from the crude, and can be used without
reformers and additives, can also burst, and the wax
makes the diesel flow thicker.
The principal differentiators in GASOIL or D2 are the
content of sulfur.
The GOST variant for D2/Gasoil is GOST 305-82 and
specifies now a sulphur content of 0.02 MAX which
is according to the ISO standard. However, the ANSI
standard will call this “Ultra Low Sulphur”, and retain
0,2% (2000ppm) as the “Low sulphur. The reduction of
sulphur in the Gasoil used for heating has contributed
to less pollution in many cities.
The viscosity requirement of diesel fuel is usually
specified at 40 °C. A disadvantage of diesel as a vehicle
fuel in cold climates, is that its viscosity increases as
the temperature decreases, changing it into a ge that
cannot flow in fuel systems. Special low-temperature
diesel contains additives to keep it liquid at lower
temperatures, but starting a diesel engine in very
cold weather may still pose considerable difficulties.
Another disadvantage of diesel engines compared to petrol/gasoline engines is the possibility of runaway failure.
Since diesel engines do not need spark ignition, they can run as long as diesel fuel is supplied. Fuel is typically
supplied via a fuel pump. If the pump breaks down in an “open” position, the supply of fuel will be unrestricted, and
the engine will run away and risk terminal failure.
With turbocharged engines, the oil seals on the turbocharger may fail, allowing lubricating oil into the combustion
chamber, where it is burned like regular diesel fuel. In vehicles or installations that use diesel engines and also
bottled gas, a gas leak into the engine room could also provide fuel for a runaway, via the engine air intake.
Top uses of D2
Methanol is a common laboratory solvent and is also used;
• Military vehicles
• Engines and power plants
• Poor quality diesel fuel has been used as an extraction agent for liquid–liquid extraction of palladium from nitric
acid mixtures. Such use has been proposed as a means of separating the fission product palladium from PUREX
raffinate which comes from used nuclear fuel. In this system of solvent extraction, the hydrocarbons of the
diesel act as the diluent while the dialkyl sulfides act as the extractant. This extraction operates by a solvation
mechanism. So far, neither a pilot plant nor full scale plant has been constructed to recover palladium, rhodium
or ruthenium from nuclear wastes created by the use of nuclear fuel.
• Diesel fuel is also often used as the main ingredient in oil-base mud drilling fluid. The advantage of using diesel
is its low cost and that it delivers excellent results when drilling a wide variety of difficult strata including shale,
salt and gypsum formations. Diesel-oil mud is typically mixed with up to 40% brine water. Due to health, safety
and environmental concerns, Diesel-oil mud is often replaced with vegetable, mineral, or synthetic food-grade
oil-base drilling fluids, although diesel-oil mud is still in widespread use in certain regions.
• During development of Rocket engines in Germany during World War II J-2 Diesel fuel was used as the fuel
component in several engines including the BMW 109-718. J-2 diesel fuel was also used as a fuel for gas turbine
The less Sulphur, the better, 0.05% is the super quality for vehicles, etc., while other qualities are for generators, power plants, etc.