How many liters of engine oil does the Audi Q5L require?

[DelRose]

Audi Q5L requires 5 liters of engine oil. The functions of engine oil include the following 3 points: 1. Lubrication: There is rapid relative sliding between the piston and cylinder, as well as between the main shaft and bearing shells. To prevent excessive wear of parts, an oil film needs to be established between the two sliding surfaces. A sufficiently thick oil film separates the surfaces of relatively sliding parts, thereby achieving the goal of reducing wear. 2. Auxiliary cooling: Engine oil has a relatively low specific heat capacity and is located inside the engine, so it does not inherently have a cooling effect. However, during engine operation, heat energy is generated by fuel combustion. The engine oil can carry this heat back to the oil tank and dissipate it into the air, assisting the radiator in cooling the engine. The actual cooling effect is provided by the water outside the engine housing. 3. Sealing and leakage prevention: Engine oil can form a sealing ring between the piston rings and pistons, reducing gas leakage and preventing the entry of external contaminants.