What Are The Basics of Engine Oil?

If you own a car, the importance of engine oil cannot be overstated. It serves a critical role in the health of your vehicle. Engine oil helps to lubricate the moving parts and helps to protect your engine from wear and tear. In this article, we will cover the basics of engine oil, including types of oil, viscosity, and how to choose the best oil for your car.

Types of Engine Oil

Not all engine oils are created equal. There are various types of engine oil available in the market, each designed for specific purposes. The three most common types of engine oil are conventional, synthetic, and high-mileage oil.

  • Conventional Oil: This is the most common type of engine oil and is recommended for engines with low to moderate mileage. Conventional oil is made from refined crude oil, which is blended with additives to improve its performance.
  • Synthetic Oil: Synthetic oil is designed to provide maximum protection and performance in extreme temperatures and harsh driving conditions. It is formulated with a mixture of synthetic compounds and premium additives, making it more expensive than conventional oil.
  • High-Mileage Oil: High-mileage oil is designed for engines with over 75,000 miles. It contains special additives that help to seal the engine’s piston rings and protect against oil consumption.


Viscosity is a measure of how easily oil flows at a certain temperature. Choosing the correct viscosity oil for your vehicle is critical for engine performance and longevity. Viscosity is measured in two numbers: the first number, followed by a “W” (winter), and the second number, which represents the oil’s thickness at operating temperature.

For example, 10W-30 oil flows like a 10-weight oil at low temperatures and a 30-weight oil at high temperatures. Consult your vehicle’s owner’s manual or a mechanic to determine the recommended viscosity oil for your car.

What Are The Basics of Engine Oil?

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How to Choose the Best Oil for Your Car

Choosing the best oil for your car can be overwhelming. Here are some factors to consider when selecting engine oil:

  • Vehicle Age: The age of your vehicle is a significant consideration when selecting engine oil. High mileage and older vehicles may require special formulations.
  • Driving Conditions: Driving conditions, such as stop-and-go driving or extreme temperatures, must be considered when selecting engine oil.
  • Oil Additives: Some engine oils contain additives that provide additional benefits, such as reducing engine deposits or improving fuel efficiency.
  • Manufacturer Recommendations: Consult your vehicle’s owner’s manual or a mechanic for manufacturer recommendations regarding engine oil viscosity and type.
What Are The Basics of Engine Oil?

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There you have it, the basics of engine oil. Remember, changing your engine oil regularly is one of the most important things you can do to prolong the life of your vehicle. By understanding the types of oil available, viscosity, and how to choose the best oil for your car, you can maximize your engine’s performance and protect your investment.

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