Diesel fuel in general is any liquid fuel specifically designed for use in diesel engines, whose fuel ignition takes place, without any spark, as a result of compression of the inlet air mixture and then injection of fuel. Diesel fuel is refined from crude oil at petroleum refineries. Diesel fuel simply packs more energy in every gallon than gas fuel, which makes it more economical overall. Diesel engines are still more efficient than gas engines, but less so for those who are mostly engaged in city driving.
Generally speaking, diesel fuel, also called diesel oil, is any liquid fuel specifically designed for use in a diesel engine, a type of internal combustion engine in which fuel ignition takes place without a spark as a result of compression of the inlet air and then injection of fuel.
Diesel fuel is the common term for the distillate fuel oil sold for use in motor vehicles that use the compression ignition engine named for its inventor, German engineer Rudolf Diesel. He patented his original design in 1892. Diesel fuel is refined from crude oil and from biomass materials.
Diesel fuel is made from crude petroleum. Small amounts of sulfur, nitrogen, and oxygen (so called heteroatoms) are present in this fuel. When heteroatoms are bound into molecular structures with carbon and hydrogen, the resulting compounds are not characterized as hydrocarbons.
Automobile diesel is the same as truck diesel, but the pump nozzles are not as big. And, sometimes the “automobile diesel” is priced higher than truck diesel.
Why is it called diesel #2?
#2 is the kind of diesel you're most likely to find at gas stations across the country and around the world. This type of diesel fuel has the highest number of energy components and lubricating properties you'll find in a fuel mixture, and offers the best overall fuel performance on the market.
Diesel fuel simply packs more energy in every gallon than gas fuel, which makes it more economical overall. Diesel engines are still more efficient than gas engines, but less so for those who are mostly engaged in city driving.