Gasoil, often referred to as diesel oil or simply diesel, is a middle distillate derived from the crude oil refining process. It possesses properties between those of lighter fuels like gasoline and heavier fuels like lubricating oil. Gasoil is used as both a fuel and a processing element in various industries. Primary Characteristics: Appearance: Clear to slightly hazy, ranging in color from light straw to amber. Odor: Characteristic petroleum smell. Density: Varies based on specific grade and blend but generally denser than gasoline. Cetane Number: Indicator of the combustion speed of diesel fuel and compression needed for ignition. Specifications: Gasoilâ??s quality and classification often adhere to standards set by organizations such as ASTM (American Society for Testing and Materials) or equivalent regional standards. Variations include Ultra-Low Sulfur Diesel (ULSD), Low Sulfur Diesel, and others. Applications: Automotive: Fuel for diesel-engine vehicles, such as trucks, buses, and cars. Industrial: Used in various industrial machines and engines, including generators. Marine: Fuel for certain types of marine vessels. Heating: Used in some regions as heating oil for homes and businesses. Power Generation: Fuel for diesel-powered electricity generators. Advantages: Energy Dense: Provides more energy per gallon compared to gasoline, leading to longer fuel economy in diesel engines. Efficient: Diesel engines often convert fuel to energy more efficiently than their gasoline counterparts. Reliable: Known for its durability and reliability in heavy-duty applications.