Fuel is the fuel used to fuel the engine, which is mainly divided into gasoline and diesel. The engine oil determines the basic performance of the lubricating oil, and the additives can make up for and improve the shortcomings of the base oil performance, give some new properties, and are an important part of the lubricating oil. So what's the difference between fuel and oil?

1. Different types: the types of engine oil include gasoline engine oil, fully synthetic engine oil, semi-synthetic engine oil, mineral oil, etc., and the types of fuel oil include gasoline and diesel.

2. The definition is different: engine oil is engine lubricating oil, not fuel oil, but a kind of driving fuel oil, fuel oil is an important fuel for the engine, divided into gasoline and diesel.

3. Different source characteristics: engine oil is mainly made of base oil and various functional additives, base oil is a non-volatile oil extracted from plant seeds, flowers, rhizomes or fruits, while fuel oil is purified by a mixture of various oil products and residue oil in the refinery.

4. The location is different: the ignition point of gasoline is low and far away from the engine, so it is generally placed at the bottom of the middle side of the car; the ignition point of the engine oil is high, and the fuel tank is generally placed in the front of the car near the engine.

5. The filling time of fuel and engine oil is also different: fuel is a substance that consumes quickly when the car is driving. As long as the car is on the road, it must be refueled at all times. The oil is changed during use according to the specific life cycle, not added at any time.

6. The function is different: the engine oil is a lubricating oil, which plays the role of lubricating the engine, and the fuel combustion produces energy to drive the engine.

7. The price is not the same: the price of fuel oil changes greatly, while the price of engine oil changes relatively little. The demand for fuel oil is high, and the demand for motor oil is not as great as that of fuel oil.

There are two main types of fuel, gasoline and diesel. The classification of gasoline is classified according to the octane number it contains, such as 98#, 95#, etc., the higher the octane number, the smaller the chance of deflagration, and the more beneficial it is to the engine. Diesel is classified according to its freezing point, which is why diesel vehicles use lower grades in the northern winter to prevent fuel from freezing.

Engine oil is divided into gasoline engine oil and diesel engine oil according to the quality grade. There are two main bases for the selection of diesel engine lubricant quality grades. One is based on the sum of the mechanical load and thermal load of the automobile engine, expressed as a reinforcement factor, and the other is based on the severity of the engine's operating conditions. Gasoline engine oil is selected according to the harshness of the engine working conditions, the additional devices in the intake and exhaust system of imported vehicles, the year of production, etc., and the gasoline engine oil of the corresponding performance level is selected. Generally speaking, high-quality engine oil can replace low-quality engine oil, but it must not be replaced by low-quality engine oil, otherwise it will cause engine failure or even damage.

Fuel and oil do the following:

1. The automobile fuel system will supply a certain amount of well-atomized gasoline to the engine according to the needs of the engine working conditions;

2. The automobile fuel system can better mix with a certain amount of air to form a combustible mixture, so that the car can travel a considerable distance.

3. The oil can play a lubricating role, for the piston and the cylinder, the spindle and the bearing pad have a fast relative sliding, in order to prevent excessive wear of the parts, it is necessary to establish an oil film between the two sliding surfaces.

4. The function of cleaning and cleaning, good engine oil can bring carbide, oil sludge and worn metal particles on the engine parts back to the oil tank through circulation, and wash away the dirt on the working surface of the parts through the flow of lubricating oil.

5. The engine oil plays the role of anti-rust and anti-corrosion, and the lubricating oil can be adsorbed on the surface of the parts to prevent water, air, acidic substances and harmful gases from coming into contact with the parts.