Lubricant dipstick in automobile engine

When to change car engine oil?

Lubricants work to burn, clean and disinfect engine parts when vehicles are in operation, so most automotive lubricants will be accompanied by detergent inside. In the process of working, the residues will float inside the solution to help the machine parts do not deposit.

When using lubricant will produce a lot of residue. The function of automobile lubricant is undeniable. So when will you have to change car engine oil to operate stably?

Limits to change cars viscosity and what to know

Normally a new car when operating from 3,000 to 5,000 km or 3 months should change oil 1 time. However, there are some high-end luxury cars that use high-grade lubricants, the longer the operating time, the longer the distance.

However, thanks to technical advances, the car manufacturers have extended the oil change distance to 12,000 – 16,000 km or 6 to 12 months, saving costs of up to 250$. dries over time so users still need to change 2 times per year to ensure performance and engine life.

In addition to the above calculation, it is possible to rely on the engine oil dipstick that any automobile is equipped. Usually the oil dipstick has a yellow handle, located on the engine, when it is easy to find the bonnet.

Lubricant dipstick in automobile engine
Lubricant dipstick in automobile engine

On both ends of the probe there are two rungs max and min, the oil must be in this level to ensure the engine works well. If outside, lower than the min level means the engine is lacking lubricant, higher than the max is excess oil. Both cases are not good for vehicle operation.

top of the oil gauge dipstick in a car engine
top of the oil gauge dipstick in a car engine

According to the experience of longtime automobile users, the best way to check is when the engine is cold, the oil must not be lower than min and when the engine is hot, the oil must not be higher than the max.

Looking at the color of oil sticking on the top of the oil dipstick, you can know whether or not to change the oil. Accordingly, if the color of the oil is black, it is time to change the oil, while if the oil on the dipstick is orange, the oil is still good, should not be changed.

When a car needs a new oil change will depend on many different factors such as car age (Old car needs to change the oil sooner), each operating school (When rearing, roads, ..), next to That driver’s driving habits also affect the lubrication change schedule for cars. The rate of change of motor oil viscosity will depend on the time of using the car, the level of use of the car on each terrain, the number of KM traveled.

For example, a car that takes only 2-3 months can go over 10,000Km, while there are cars that take a whole year to reach 10,000Km. Therefore, it is impossible to accurately measure the change in motor oil. According to some information from the car manufacturers, it is not necessary to run enough KM to change the viscosity, we can change the lubricant sooner if the car operates in bad conditions. Besides, after 1 year if the car has not run all KM should also change the car oil. And to ensure that the oil changes periodically as prescribed, you should replace the lubricants appropriately (Based on API and SAE specifications).

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how to pour oil into the engine when there is no funnel
how to pour oil into the engine when there is no funnel

Long car does not run still need to change car engine oil

The oil itself is less consumed but in the oil there are many additives that perform various functions such as cleaning, anti-wear, anti-rust, anti-oxidant, anti-foam; and when performing these functions, these additives are gradually consumed, making the oil degraded and need to be replaced.

The oil needs to be replaced earlier without waiting for the required kilometers because although the car is low, the oil stored in the engine for a long time also degrades over time. Therefore, besides the number of kilometers, the car manufacturer also stipulates the use time of oil is usually 1 year. So if after 1 year that the car has not reached the prescribed km, it is still necessary to change the engine oil.

Therefore, although the car runs a little, but the oil stored in the engine for a long time also degraded over time. Therefore, besides the number of km, the car manufacturer also stipulates that the time of using oil is usually 1 year, if after 1 year the car has not reached the prescribed km, it still needs to replace engine oil.

Black lubricant proves that the oil is working properly

Black oil is the principle of operation of the oil, in the engine is operating, the heat up to hundreds of degrees will cause the phenomenon of oil color change, during movement in the engine, In addition to the lubricating effect, the oil also does engine washing work.

So, the oil does not change color does not mean good oil, in addition to cooling the oil also has the effect of lubricating the engine, so the black is normal but the level of the black viscosity, if the oil is black too, it is not good, viscous residue may be the residue of the filtered rust from friction in the engine.

The motor oil is blackened
The motor oil is blackened

Refer to car oil change norms for each type of engine

If the vehicle uses a gasoline engine of a quality grade proposed to be used as: API SG, SJ; SL or SM. The letter S represents the type of oil used for gasoline engines, the next letter represents the quality level (Alphabetically). On diesel engine lubricants should use performance level is: API CG-4, CH-4 or CI-4. The letter C represents the diesel engine, the next letter is the quality level, the number 4 represents the 4-stroke engine.

If you use the recommended quality lubricant, the oil change cycle will be in accordance with the regulations. On the contrary, if the lubricant is of inferior quality, the oil change cycle will be short.

SAE viscosity grade is also a factor affecting your car oil change cycle. Normally lubricants with SAE parameters are recommended: SAE 40; 50 (Single grade lubricants), SAE 15W-40 and 20W-50 (Multi-level lubricants).

Most cars currently use multi-level lubricant, it has many advantages compared to single-grade lubricants (Save fuel, help the car operate more smoothly).

How to pour oil into the engine using a funnel
How to pour oil into the engine using a funnel

Change car engine oil based solely on the number of kilometers is a common mistake by users

If gasoline is considered a “food”, then lubricating oil is like the “blood” of the engine. In the composition of lubricating oil, there are additives to ensure cleaning, chemical corrosion resistance and anti-foam properties.

During combustion, the fuel generates carbon deposits and dust that stick to the engine, the lubricant disperses the residue and soot into small molecules and stores it in the oil. After using time, the sediment content exceeds the allowed level and it can stick back to the engine.

The first habit is to change the engine oil mechanically according to the number of kilometers traveled. Replacing engine lubricating oil after how many kilometers is used, seems like a simple question. However, the specific number, 3,000km, 5,000km, or 10,000km … depends on many factors.

+) The replacement of lubricant depends on the type of lubricant that is required by the vehicle manufacturer. For example, the manufacturer’s standard 2016 Mazda CX-5 2.0 AT uses Castrol 5W30 SN oil, for engines in good condition, this oil has a replacement period of 5,000 km. Therefore, with the engine of this car, pouring oil with the index of 0W40 is not in terms of specifications, but regardless of which brand of 0W40 oil it is and how many kilometers it needs to be replaced. .

+) The second is also dependent on the actual status of the engine. Also take the same example for the Mazda CX-5, when it is put into use, the oil change is 5,000 km periodically. However, due to operating characteristics, or after many years of use, with tens of thousands of kilometers of operation, the inside of the engine has a larger gap, more rusty, it is necessary to replace lubricating oil periodically. mileage is shorter than the original factory specification of the vehicle.

+) Next, the oil change depends on the operating conditions. A vehicle that often operates in traffic conditions, floods or short stops … it is necessary to replace lubricating oil according to the cycle of shorter operating kilometers compared to a vehicle operating in better conditions. .

+) Next is the use of unknown additives. Many vehicle owners pour unapproved, unidentified additives into lubricants to meet their expectations, such as cleaning or breaking down sediment. If the user does not learn well, additives that are incompatible with the lubricating oil in use may upset the chemical balance in the oil and reduce the performance of the lubricating oil.

Remove car oil filter
Remove car oil filter

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Vehicle owners also tend to change the oil as soon as the oil turns black. This habit causes unnecessary waste if the lubricant has not reached the date of use or the mileage operated.

Another habit is to replace lubricants only and not to replace lube filters. Need to change lubricating pool oil after 2 oil changes to ensure good flow and quality of lubricant oil flow inside the engine.

Use pliers to remove automotive oil
Use pliers to remove automotive oil

When do you need to change car engine oil?

Please note that if the car is new, the periodic oil change program and maintenance and maintenance are also different from the old car: Usually about the first 1,000km when receiving the car, the customer must return to the first service agent to attach change viscosity – The next level is 5000km – The third level is 10,000 …..

Particularly for old cars: In case your car has been used for a long time and often operates in areas of dirt, mud, .., the time to change the oil between 2 times will be much shorter. Driving in the inner city (running and braking continuously) together makes the change of lubricant time come sooner than driving at a stable speed.

You can refer to the time when you need to change car oil in the manual, or the technical staff. But that information is only true when your vehicle is always operating in normal conditions.

Besides, we should note that the period of oil change periodically depends on two main points: Time and number of KM traveled. Some cars only take 2-3 months to be able to go over 10,000Km, while there are cars that take the whole year to reach 10,000Km. The rate of change of car oil we send to customers for reference to operate in accordance with the vehicle’s cycle is better

According to some information from the car manufacturers, it is not necessary to run enough KM to change the viscosity, we can change the lubricant sooner if the car operates in bad conditions. Besides, after 1 year if the car has not run all the KM numbers should also change the car oil.

oil change for cars
oil change for cars

Important notes during oil change process

Notes on changing the car oil such as opening the oil cap to allow air to flow. Before discharging oil, it is recommended to carefully check the position of engine oil and gear oil drain plugs, to avoid mistaken discharges. When removing the screw should check the temple, if broken, replace it. While waiting for the oil to be discharged, the car body screws and tire surface can be checked.

Depending on the type of vehicle, each type of engine and according to the manufacturer’s regulations, engine oil is classified by viscosity index. After pouring oil into the engine, it is necessary to check the oil level and clean the oil head cover, around the oil spill position. Avoid oil spills outside the engine, causing a fire risk

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