How Engine Oil Cooler Works?

Before we start talking about how an engine oil coolant works, let’s take a look at what it is. Continue reading to learn more.

About the Engine Oil Cooler

About Engine Oil Cooler

The engine oil cooler is an integral part of the car’s radiator system. This cooler is a smaller radiator than the main radiator of an engine. It maintains oil at a constant and optimal temperature. 

It moves in the engine to create a cooling effect through a maze-like network of pipes. Its main purpose is to reduce oil temperature and cool it down. This will improve the engine’s life expectancy and transmission longevity. 

While any vehicle can have an engine oil cooler, not all vehicles need one. An engine oil cooler is required for vehicles that are often involved in high-performance or heavy-duty situations. 

They should be placed so that they can receive maximum airflow, such as behind or in front of the radiators or fans.

Coolers are essential to ensure your vehicle runs smoothly on the road. A cooler can lower the temperature, which helps to prevent overheating. It also prolongs the engine’s life. 

The engine oil cooler also helps maintain the correct level of viscosity. When the car is heated, the viscosity of the oil will drop. This means that the oil will not stick to the components as well.

How does the engine oils cooler work?

Oil is essential for the protection of the vehicle’s components. A heat exchanger is necessary for all engines to get rid of the engine’s energy when it runs.

We all know the importance of engine oilYou can find it in your car or any other vehicle. Car oil coolers are components that help maintain the optimal temperature range for different parts of an engine. 

Although the two types of car oil coolers can be divided, their working principle is the same. An oil cooler works on the principle that heat is released. It can be placed at different locations in the engine to improve efficiency and work more efficiently.

The oil will get inside if the temperature in the oil cooler exceeds 100 degrees Celsius. Once the oil has been inside, the oil will start moving around the pipes. The pipes have fins that heat up. 

After the oil has been processed, the cooler will transfer the hot oil to the free air or engine coolant. This will reduce the oil temperature that is flowing out of the cooler. The cooler will then be at a lower temperature.

This oil, which has been reduced in temperature, will be pumped back into your engine to provide additional lubrication and absorb heat. This is how the oil cooler operates, and it will continue to do so repeatedly.

Different types of engine oil coolers 

Types of Engine Oil Coolers 

There are two types engine oil coolers:

Types of air cooling

An air-cooling type engine oil cooler is an oil cooler that uses air to cool the oil. 

It is used to lower the temperature of oil so that it can be recirculated through the system of some turbine engine lubricating systems. The engine’s front end houses the air-cooling oil cooler.

An oil cooler component is shaped like an oil radiator and has air fins and core. The center is where the oil flows. It then cools down. Dry-sump oil systems often include an air-cooling engine oil cooler.

 Types of water cooling

A water controlling type of engine oil cooler is an oil cooler that uses engine coolant to cool the oil. 

This water cooling component is usually placed in an engine coolant tube to allow the oil coolers to be submerged and then covered with engine coolant. 

Advantages and disadvantages 

The benefits of an engine oil cooler

Here are the benefits of using an oil cooler with an internal combustion engine

  • The oil cooler cools the oil to a temperature that is consistent with a thermostat.
  • It allows oil to cool before being circulated.
  • The oil-to water cooler regulates the oil temperature.
  • It’s easy to install an oil cooler.
  • The oil cooler improves the performance of an engine.
  • Water cooling systems can cause engine damage; oil naturally reduces the risk.
  • The engine is designed to be oil-coolant and therefore radiators, pumps, coolant tanks, and additional coolant tanks are eliminated.
  • Oil circulation is very efficient and well maintained.
  • Oil, an electrical insulator can be used in or in direct contact to electrical equipment like transformers.

Engine oil cooler’s disadvantages :

Despite the many benefits of an oil cooler, there are still limitations. These are the downsides of an engine oil cooler

  • Oil may be flammable.
  • Extra oil may be required in order to operate the oil cooler.
  • It needs extra maintenance.
  • Oil circulation will be halted if the thermostat fails, even if it is permanently locked.
  • Over cooling can occur if the valve is left open.
  • Water is more readily available than oil so it can be used as a cooling agent.
  • Pure water can be evaporated and boiled but can’t be degraded. It can, however, get polluted or become acidic.


The engine oil cooler keeps the engine cool and prevents it from overheating. 

This article should answer your question about the engine oil cooler and provide you with sufficient information to be of assistance.

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