What are the different types of oil?



Car oil, often referred to as engine oil, is the lifeblood of a vehicle’s internal combustion engine. It serves a crucial role in lubricating various engine components, reducing friction, and dissipating heat to ensure optimal performance and longevity.

Engine oil acts as a protective barrier, preventing wear and tear on vital parts while also cleaning the engine from impurities and deposits. Choosing the right type of oil and adhering to regular oil change intervals are essential maintenance practices to keep a car running smoothly.

Choosing the right type of oil for your vehicle is a crucial aspect of maintenance that can significantly impact its performance and longevity. With a multitude of options available, ranging from conventional to synthetic oils, and various viscosity grades, understanding the distinctions between them is essential for responsible car ownership.

Engine oil pouring from canister, isolated on white background

The different types of oil

In the ever-evolving automotive industry, advancements in oil technology continue to enhance efficiency, reduce emissions, and contribute to the overall reliability of modern vehicles, making car oil a fundamental element in the pursuit of a smoother and more sustainable driving experience.

In this guide, we will explore the different types of engine oils, their compositions, and the scenarios in which each is best suited. Whether you’re a seasoned car enthusiast or a first-time owner, this information will empower you to make informed decisions about the lubricant that keeps your engine running smoothly. So, let’s delve into the world of automotive oils and demystify the choices available for your vehicle.

1. Conventional (Mineral) Oil

Conventional motor oil, often known as mineral oil, is obtained from crude oil. It is the most basic type of oil available and is often the least expensive. While it provides adequate lubrication, it may break down more quickly under extreme conditions compared to synthetic oils. Conventional oil is appropriate for older automobiles with basic engine design.


  • Widely available and affordable.
  • Suitable for older vehicles with simple engine designs.


  • Requires more frequent changes compared to synthetic oils.
  • May not provide optimal protection under extreme driving conditions.

2. Synthetic Oil

Synthetic oil is chemically engineered to provide superior lubrication and performance. It offers better protection against high temperatures, reduces engine wear, and provides improved fuel efficiency. Synthetic oils are recommended for modern vehicles, high-performance engines, and for those who want the best possible protection for their engines. They are more expensive than conventional oils but can extend the life of your engine.


  • Offers superior protection against engine wear and deposits.
  • Performs well in extreme temperatures, providing better stability.
  • Extended oil change intervals, reducing maintenance frequency.


  • Typically, more expensive than conventional oil.
  • May not be necessary for some vehicles with low mileage and regular driving conditions.

3. Synthetic Blend Oil

As the name suggests, synthetic blend oil is a mixture of conventional and synthetic oils. This oil provides some of the advantages of full synthetic oil at a cheaper cost. It strikes a balance between cost and performance, making it a good option for vehicles that may benefit from enhanced protection but don’t necessarily require full synthetic.


  • Combines the benefits of synthetic and conventional oils.
  • More affordable than full synthetic oil.


  • Not as high-performing as full synthetic oil.
  • May not be necessary for all vehicles, depending on driving conditions.

4. High-Mileage Oil

High-mileage oil is specially formulated for vehicles with over 75,000 miles on the odometer. It contains additives that can help condition and rejuvenate seals and gaskets, potentially reducing oil leaks and consumption. This type of oil is designed to address the specific needs of older engines that may have accumulated more wear and tear.


  • Specifically formulated for engines with higher mileage.
  • Contains additives to reduce wear and combat leaks.


  • More expensive than conventional oil.
  • Not necessary for newer vehicles with low mileage.

5. Viscosity

Viscosity is a critical factor in selecting the right oil for your car. It relates to the reluctance of oil to flow at various temperatures. For example, 10W-30 oil has a lower viscosity when cold (the “W” stands for winter) and a higher viscosity when hot. The first number (e.g., 10W) represents cold-temperature flow characteristics, while the second number (e.g., 30) represents high-temperature characteristics.


  • Allows for customization based on temperature and driving conditions.
  • Follows industry standards for oil thickness.


  • Choosing the wrong viscosity can lead to poor engine performance.
  • Requires knowledge of climate and driving conditions.

Choosing the type of oil for your car

The finest motor oil for your vehicle, whether synthetic, synthetic blend, high-mileage, or traditional oil, is determined by a number of criteria. Some are external influences, such as your location, driving habits, or even the age of your engine.

Other parameters are fixed dependent on your vehicle’s engine type and the manufacturer’s standards. Your vehicle’s manual will recommend an ACEA category, grade, and, in many cases, manufacturer for your oil. When shopping for oil, search for one that fits the specified specifications.

Buy the precise brand advised by your vehicle’s owner’s manual for the greatest performance. Using a cheaper, unbranded oil of the same specification should not harm your vehicle if you top it up and change it on a regular basis; however, the big manufacturers invest a lot of money in developing high performance oils, which can have benefits such as extending engine life, lowering fuel consumption, and not needing to be topped up as frequently.

Changing your car oil

Your vehicle handbook will tell you how often you should replace your oil as well as which oil you should use. Contaminants will eventually find their way into your oil. At the same time, oil will gradually leak from your engine.

If you merely top off your oil rather than completely replace it, the ratio of impurities to oil rises, and any abrasive particles in it gradually wear away at your engine. Therefore, it is critical to change your oil thoroughly on a regular basis.


Selecting the right type of oil for your car is crucial for maintaining its engine’s health and performance. Consider factors like your vehicle’s age, mileage, and operating conditions when making your choice.

Consulting your vehicle’s owner’s manual and seeking advice from a trusted mechanic can also help you make an informed decision. Regular oil changes with the appropriate type of oil will go a long way in ensuring the longevity and reliability of your vehicle.

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