Diesel D2 is a refinery abbreviation for gasoil. It is the second distillate from crude oil and can be used without reformer and additives. The main difference between GASOIL and D2 is the sulfur content. ISO has a standard for D2 that most oil companies use as a reference.
D6 oil is also known as residual fuel its oil and is of high viscosity. This fuel oil requires preheating to 220-260 degrees Fahrenheit. D6 is mainly used for generators. D6 is a type of residual fuel that is mainly used in power plants and larger ships. The fuel must be preheated before it can be used.
