Do you know how to change your car's oil?
author: Ann
2025-03-04
01. Oil shelf life
The unsealed oil starts to deteriorate after about a year
Oil that is introduced into the engine and starts working has a shorter lifespan.
02. Oil replacement time
Usually the replacement cycle is half a year or 5,000 kilometers
Synthetic oil is 9 months or 7,500 kilometers
Fully synthetic oil is one year or 10,000 kilometers
(It can be appropriately extended or shortened according to different vehicle use environments, driving habits, specific models and oil brands.)
03. How to identify whether the oil has deteriorated?
Oil deteriorates and will appear
Dark black, foamy and emulsified
No sticky feeling, astringent or odor when ground with fingers
At this time, the oil loses its properties
It cannot meet normal lubrication needs and cannot be used again
04. What is the reason for the deterioration of the oil?
>>>>1. Air filter element is dirty
After the air filter element loses its filtering effect, dust and impurities in the air can easily enter the engine compartment, enter the crankcase through the cylinder, and cause the sludge and viscosity of the engine oil to increase, making the lubricity of the engine oil worse, and even clogging the oil filter, causing abnormal wear of the engine.
>>>>2. The engine oil is diluted and emulsified by water
The cylinder gasket is damaged or other reasons cause water to enter the cylinder or crankcase. When the water content exceeds 0.1%, the antioxidants, detergents and dispersants added to the engine oil will become ineffective, thereby accelerating the oxidation process of the engine oil.
>>>>3. The combustion chamber is not tightly sealed
Because the piston ring or cylinder is not discovered after wear, the fuel enters the crankcase for a long time and contacts with the engine oil. The long-term high temperature causes the engine oil to deteriorate, the viscosity to decrease, and the effect of forming an oil film is poor, etc.
>>>>4. Long-term failure to change the engine oil
Long-term failure to maintain or change the engine oil or long-term parking will result in the vehicle not being driven for a long time. After a long time, the engine oil index will decrease, and the lubrication effect on the engine will be significantly reduced.
The unsealed oil starts to deteriorate after about a year
Oil that is introduced into the engine and starts working has a shorter lifespan.
02. Oil replacement time
Usually the replacement cycle is half a year or 5,000 kilometers
Synthetic oil is 9 months or 7,500 kilometers
Fully synthetic oil is one year or 10,000 kilometers
(It can be appropriately extended or shortened according to different vehicle use environments, driving habits, specific models and oil brands.)
03. How to identify whether the oil has deteriorated?
Oil deteriorates and will appear
Dark black, foamy and emulsified
No sticky feeling, astringent or odor when ground with fingers
At this time, the oil loses its properties
It cannot meet normal lubrication needs and cannot be used again
04. What is the reason for the deterioration of the oil?
>>>>1. Air filter element is dirty
After the air filter element loses its filtering effect, dust and impurities in the air can easily enter the engine compartment, enter the crankcase through the cylinder, and cause the sludge and viscosity of the engine oil to increase, making the lubricity of the engine oil worse, and even clogging the oil filter, causing abnormal wear of the engine.
>>>>2. The engine oil is diluted and emulsified by water
The cylinder gasket is damaged or other reasons cause water to enter the cylinder or crankcase. When the water content exceeds 0.1%, the antioxidants, detergents and dispersants added to the engine oil will become ineffective, thereby accelerating the oxidation process of the engine oil.
>>>>3. The combustion chamber is not tightly sealed
Because the piston ring or cylinder is not discovered after wear, the fuel enters the crankcase for a long time and contacts with the engine oil. The long-term high temperature causes the engine oil to deteriorate, the viscosity to decrease, and the effect of forming an oil film is poor, etc.
>>>>4. Long-term failure to change the engine oil
Long-term failure to maintain or change the engine oil or long-term parking will result in the vehicle not being driven for a long time. After a long time, the engine oil index will decrease, and the lubrication effect on the engine will be significantly reduced.
Electric vehicle coolant usage
Regarding the issue of oil sedimentation
