What Type of Oil is Light Fuel Oil?

[VanAdaline]

Light fuel oil generally refers to hydrocarbon mixtures with a boiling point range of approximately 50–350°C. The term is not strictly defined. In the petroleum refining industry, it can refer to light distillate oil or light oil products. Below is an introduction to automotive fuels: Introduction to Fuels: Fuels are used for fuel engines and are mainly divided into gasoline and diesel. The properties of fuels depend largely on the nature of the crude oil and the processing methods. The main specifications determining fuel oil quality include viscosity, sulfur content, and pour point. For fuel oils used in power plants, there are also regulations on vanadium and sodium content. Fuel Classification: Fuels are primarily classified into two types. Gasoline is classified based on its octane rating, such as 90# or 97#. A higher octane rating reduces the likelihood of engine knocking and is more beneficial for the engine. Most high-end vehicles use gasoline with higher octane ratings. Diesel is classified based on its freezing point. For example, 0# diesel solidifies at temperatures below 0°C, while -10# diesel solidifies at -10°C. This is why diesel vehicles in northern regions use lower-grade diesel in winter to prevent fuel from freezing. Unleaded Gasoline: Only super unleaded gasoline can be used in Formula 1 (F1). While 98-octane unleaded gasoline available at regular gas stations is largely similar, F1 fuel contains additives to ensure faster and more efficient combustion.

[DelLilah]

Last time I ran into Old Li at the gas station, we were chatting about this. Light fuel oil is actually a general term for oil products like diesel and kerosene. The No. 0 diesel we truck drivers use for hauling goods is the most common type. They're heavier than gasoline but much lighter than residual oil, with excellent fluidity and low ignition temperatures. Before long hauls in winter, I always check the oil's anti-freezing properties. If you fill up with subpar light diesel, the filter will definitely get completely clogged. Last time, Old Wang's excavator broke down because he used fuel oil with the wrong freezing point—the fuel lines got completely waxed up, costing thousands in repairs. Remember to get fuel from reputable gas stations; don't try to save a few bucks and end up paying more.

[VonManuel]

We in marine engineering know this best—light fuel oil refers to intermediate distillates with a distillation range of 180°C-350°C. The heavy fuel oil burned by the ship's main engine has viscosity as thick as syrup, but the generators run on this light fuel. Its characteristics include low sulfur content, fewer impurities, strong fluidity, and it's particularly good for engines. Last time, the second mate tried to save money by mixing in heavy fuel, which directly jammed the fuel pump, leaving us adrift at sea for two days waiting for rescue—a lesson to remember for a lifetime.

[VonLaura]

I used to test this indicator every day when doing quality inspection at the oil depot. The most notable characteristic of light fuel oil is its density ranging between 0.78-0.85g/cm³, with a flash point exceeding 60℃, making it much safer than gasoline. Products like the kerosene used in our household gas stoves and the National VI diesel for buses fall into this category. Key parameters to monitor are the cetane number and viscosity. Last time an intercity bus broke down midway, it was due to using fuel with substandard cetane number, causing engine knocking and complete failure.

[DeRylee]

In the engineering machinery industry for over a decade, light fuel oil is the lifeblood of our equipment. Pile drivers' hydraulic systems must use -10 light diesel, which can ignite even at minus fifteen degrees Celsius. Its characteristics include low viscosity and excellent lubricity, making pumping exceptionally effortless. Last winter, the construction site didn't prepare winter-grade oil, and the entire fleet of excavators froze solid. The key factors are the condensation point and sulfur content—if there's water at the bottom of the tank, it can rust through the high-pressure fuel pump in minutes, and a single repair can cost half the price of the machine.

[JamesonFitz]

My dad worked in an oil refinery his whole life and often said that light fuel oil is the essence of secondary crude oil processing. The atmospheric and vacuum distillation units cut out the kerosene fraction, and catalytic cracking produces diesel—both are the foundation of light fuel oil. To judge the quality of the oil, check if it's pale yellow and transparent like beer; a brownish tint indicates oxidation and deterioration. The diesel filters in our cars often clog due to excessive impurities, especially with high resin content in small-scale refinery oil, requiring filter replacement every three months.