Auto >> AutoSPT >  >> Car Care

When is the Best Time to Replace Engine Oil?

Every car engine has its own engine oil inside. Since these engine oil will be used up and deteriorate after use, there is a need to replace it periodically. In addition, it is also necessary to change the oil element according to the period of use as well.

So when should we replace it? In this article, we will introduce you the appropriate time to replace engine oil and oil element.


Role of Engine Oil

When is the Best Time to Replace Engine Oil?

Engines are divided to several types, but what they have in common is that friction occurs between the parts inside the engine.
When friction occurs, heat will be generated, and if it gets hot, the engine will melt down even if it is made of iron.

Engine oil reduces the friction done by the engine, and thus plays the role of preventing the engine from breaking down.

If you keep using the same old engine oil, it will start to lose its stickiness and it will stop lubricating the engine parts. This could result to the engine`s breakdown, so it is recommended to replace the engine oil periodically.

Appropriate Time to Change Engine Oil

When is the Best Time to Replace Engine Oil?

The time to replace the engine oil is not the same for all cars and engines.

When you change the engine oil, the appropriate time to change varies depending on things such as engine type / performance, engine oil type, car usage, etc.

Replacing the Engine Oil by Engine Type and Performance

When is the Best Time to Replace Engine Oil?

The timing for oil replacement can be done by looking at the car`s mileage. It differs depending on the type and performance of the engine.

  1. Gasoline Engine
    Manufacturer`s Recommendation: 15,000 km
    General: around 10,000 km
  2. Turbo Engine
    Manufacturer`s Recommendation: 10,000 km
    General: around 3,000 km to 5000 km
  3. Diesel engine
    Manufacturer`s Recommendation: 10,000 km
    General: around 5,000 km

The manufacturer`s recommendation serves as the deadline, so let`s follow this at the least when you are planning to change the engine oil. For those who just want to be safe or those who like to drive in high speed, it is better to follow the general guideline.

For turbo engine, it has a turbine attached in order to produce great power even with a small displacement.
As a large amount of oxygen enter the engine by the supercharger, the engine power will increases. As this turbocharger rotates at dozens of revolutions more than before, the engine oil will deteriorate drastically.

As a result, the replacement time for turbo engine is faster than normal engine.

Replacing the Engine Oil by Type of Engine Oil

When is the Best Time to Replace Engine Oil?

As mentioned in other articles as well, there are three main types of engine oil.

Mineral Oil
The price of this type of engine oil is cheaper than other types of engine oils.
However, it has low heat resistance and low resistance to oxidation, so it deteriorates quickly. As a result, frequent replacement is required to maintain performance. Semi Synthetic Oil
This engine oil is made by mixing mineral oil and synthetic oil.
Due to its higher performance than the mineral oil, the price is also higher as well.
It is recommended for high load cars that do a lot of long-distance driving or high-speed driving. Synthetic Oil
This type of engine oil is the most expensive and made up of high-grade oil.
By applying special purification, impurities are eliminated to its minimum. It provides high performance, good engine startability, high heat resistance, and it is difficult to deteriorate.
It is recommended for high-end sports car and high-performance engines.


Replacing Engine Oil by Car Usage

When is the Best Time to Replace Engine Oil?

  1. In case of normal operation
    In case of driving at normal speed from about 10 km to 30 km, there is no particular problem in following the oil replacement period recommended by the manufacturer.

  2. In case of not too much driving
    If you do not drive your car at all, like only during the weekend or 1-2 times a month, the mileage will be reduced instead. But, as engine oil deteriorates over time, you need to replace the oil at least once after a year has passed for normal cars, and after 6 months for turbo-engine cars.

  3. In case of high-rotation usage or high speed driving
    Engine oil deteriorates due to friction faster if the car is driven in high speed. So, as there are more cases of driving at high speed, deterioration of the engine oil will also increases. Therefore, we recommend an early oil replacement for your car.

  4. In case of severe condition
    Driving in severe conditions such as, mountain tracks or rough roads, is also one part of them.

  5. However surprisingly, there is an unexpected severe condition that everybody might not know, and that would be driving short trips. For example, repeatedly driving your car just to go shopping nearby puts the car in one of those conditions because it puts a lot of load to the engine. So, in this case, there is a need to replace the engine oil early than the recommended replacement period.


Signs Showing a Need of Engine Oil Replacement

Oil gauge

When is the Best Time to Replace Engine Oil?

There is a thing called oil gauge in the car engine. When you open the bonnet / front hood, the oil gauge is a colored round ring that you can take out from the engine. With this oil gauge, you can learn the amount of engine oil and how bad it has become by examining the oil attached at the end of it.

New engine oil is sticky and has a beautiful fox color. While, old engine oil is not sticky and dark in color.

When is the Best Time to Replace Engine Oil?

Let's try checking the engine oil when your car`s mileage reaches the guideline specified before.


Oil Lamp (Hydraulic Warning Light)

When is the Best Time to Replace Engine Oil?

There is a warning light shaped like a lamp located in the speedometer, and it is called the oil lamp (Hydraulic Warning Light). This warning light disappears after you turn on the engine if it is in normal condition. On the contrary, if it lights up when you are driving or when the engine is on, it’s an indication that "hydraulic pressure is decreasing" which means the engine oil is decreasing.

In this case, it is necessary to add more engine oil up to the specified amount, but we recommend you to replace it with new engine oil right away. In addition, you need to find out the reason for the decreasing engine oil, or else the oil lamp will light up again after some time. Most probable reason for it is engine oil leakage, check this article for more information about it.

The red light used for the oil lamp indicates that it is not safe to drive the car in current condition. So, if it lights up, find a place to stop as soon as possible. After that, you should try applying first aid or get help.

Role of oil element

When is the Best Time to Replace Engine Oil?

The oil element is a filter used to clean the engine oil by filtrating sludge and other dirty substances produced by the engine oil.

We recommend you to replace the oil element once every twice engine oil replacement and do them both together at the same time.


Risk of Failing to Replace Engine Oil

When is the Best Time to Replace Engine Oil?

As you keep neglecting the engine oil replacement, these are the possible outcomes:

  1. it worsen the car`s fuel consumption rate.
  2. the engine will make noises.
  3. the engine will not work smoothly.
  4. the engine burns and stops working.

If it is only the fuel economy that got worse, it is still savable. But, if you start hearing strange noises from the engine, the possibility that it broke down is high. Once it starts to burn out, the engine will no longer be usable.

Even neglecting such a small task could lead to irrevocable situations, so let`s at least replace the engine oil according to the recommended period and take better care for our cars.