How often is enough oil change for car?
Normally, a car needs about 3-7 liters of oil, but for cars with dry oil tanks, the amount of oil can be up to 10 - 12 liters or more.
Vehicle owners can find exact information on how much oil to use in their vehicle's engine manual to ensure correct oil filling.
With smaller engines, less oil is needed. A 4 cylinder engine typically requires about 5 liters of oil while a 6 cylinder engine uses about 6 liters.
If the engine is a small 4-cylinder with a capacity of 1.6 to 1.8 liters, the amount of oil needed is 3.5 to 3.7 liters or approximately 3.6 liters. If the car has a 4-cylinder engine larger than 2 liters, the amount of oil needed is about 5 liters.

You can unscrew the cap and check the dipstick to determine how much oil you need to add. Usually, the distance between the bottom of the stick and the top is 1 quart of oil, so you can estimate based on that. After adding oil, wait a moment and check the dipstick again to make sure there is enough oil.
Car oil change rate
To determine when to change the car's oil, the car owner needs to base it on factors such as: the age of the car, whether the car is new or old, the operating environment including climate and road, driving habits... Therefore, the car's oil change rate will depend on time, level of use and number of kilometers traveled.
Normally, a car should change its oil after about 3 - 6 months, after traveling the first 3,000 - 5,000 km. However, each car manufacturer will have different regulations on oil change time for the car. In addition, depending on the type of engine oil used, if it is a high-end type, it will have a longer travel time, maybe from 6 - 12 months, after traveling more than 12,000 km.
In addition to the above calculation, some car owners will rely on the oil dipstick. This type of dipstick is equipped on most cars today, has a yellow handle, is located on the car engine, when opening the car hood you will see it immediately.
Based on the color of the oil on the stick with the two lines min and max, the car owner can recognize whether the oil is still there or not or if there is too much oil. For example, if the color of the oil is below the min level, it means that the car engine is lacking lubricating oil. If the color of the oil is above the max level, there is too much oil. Both cases are not good for the car.
Therefore, to be safest, car owners should refer to the user manual to know the most appropriate oil change rate for their car.
How to change car oil properly at home
Step 1: Prepare necessary items.
Step 2: Place the drain oil container in the correct position to avoid oil spilling out.
Step 3: Open the oil drain bolt. Make sure all the oil has drained before tightening the bolt again.
Step 4: Remove and replace the oil filter cup.
Depending on each car manufacturer, the shape of the oil filter will be different, so before replacing the oil filter cup, observe and find out if the oil filter you are about to replace is suitable to avoid replacing the wrong oil filter for the car.
Step 5: Change the oil for the car.
Step 6: Start the car and reset the oil timer.