What is the normal oil consumption standard for cars?
1 Answers
The national regulatory standard is 0.3 liters of oil consumption per thousand kilometers. The following explains the reasons for engine oil consumption: 1. Oil is used to lubricate pistons, piston rings, and cylinders: When the piston moves downward in the cylinder, it leaves a thin oil film on the cylinder wall; during vehicle deceleration, the high negative pressure generated draws this oil into the combustion chamber; this oil, along with some of the oil film remaining on the cylinder wall, is burned during combustion due to high temperatures. 2. Oil is used to lubricate valve stems: Some oil will be drawn in with the intake air and burned together with the fuel; high-temperature exhaust gases will also burn the oil used to lubricate the exhaust valve stems.