D6 Diesel Fuel. D6 is also be known as Residual Fuel Oil and is of high-viscosity. This particular 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. It can also be burned in a furnace or boiler to generate heat, or used in an engine to generate power. PRODUCT: VIRGIN D6 DIESEL Origin: Russian Federation / Republic of Kazakhstan Price: Gross $ 0.99/Net $0.94 per Gal Shipment: One Hundred Million (100,000,000) Gal available as Lift able Quantity Loading Port: Novorossiysk / Premorskiy / Ust Luga / Port of Aktau Discharging Port: CIF safe world port