Where is the gas station?

Automobile fuel filler is generally on the left side of the engine, and there is a yellow round thing on the steel cover of the engine, as shown in the figure:

Slowly unscrew the filler cap in the opposite direction and change the oil normally. When the fuel filler cap needs to be reinstalled, moisten the fuel filler cap with the oil on the dipstick, and finally tighten it smoothly in the tightening direction.

The role of engine oil: the engine is the heart of the car. There are many metal surfaces rubbing against each other in the engine. These parts move fast and the environment is harsh, and the working temperature can reach 400℃ to 600℃. Under such harsh working conditions, only qualified lubricating oil can reduce the wear of engine parts and prolong their service life.

1. Lubrication and wear reduction: there is rapid relative sliding between piston and cylinder, and between spindle and bearing bushing. In order to prevent the parts from wearing too fast, it is necessary to establish an oil film between the two sliding surfaces. There is an oil film with sufficient thickness to separate the surfaces of relatively sliding parts, so as to achieve the purpose of reducing wear.

2. Cooling: Engine oil can bring heat back to the oil tank and then radiate it into the air to help the water tank cool the engine.

3. Cleaning: Good engine oil can circulate carbides, sludge and worn metal particles on engine parts back to the oil tank, and wash away the dirt generated on the working surface of the parts through the flow of lubricating oil.

4. Sealing and leak-proof: Engine oil can form a sealing ring between the piston ring and the piston to reduce gas leakage and prevent external pollutants from entering.

5. Rust prevention and corrosion protection: Lubricating oil can be adsorbed on the surface of parts to prevent water, air, acidic substances and harmful gases from contacting with parts. ?

6. Shock absorption and buffering: When the engine cylinder pressure rises sharply, the load on the piston, piston plate, connecting rod and crankshaft bearing suddenly increases, and this load is lubricated through the bearing, so that the impact load it bears plays a buffering role.