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Engine oil types? and When to change your old car's oil?

 There are many types of engine oil in the market that are used for different purposes, and to choose the right type for you, you need to understand a set of things, instructions that help you in how to choose engine oil, and they evaluate viscosity, and classification codes.

Each engine needs to choose an oil of high quality to improve the level of engine performance, and each type of oil differs from the other with different additives, which is what distinguishes each type of oil. The level of viscosity and classification service may differ completely engine performance depending on the condition of the engine oil.


 Oils, in general, are materials used to reduce wear and reduce frictional losses, resulting from the movement of two surfaces during contact. However, motor oil has several other tasks, such as:

  • Lubricate the moving parts of the engine to reduce the friction between them.
  • Cooling the engine and absorbing part of the heat resulting from combustion and friction.
  • Clean the engine of combustion products of impurities.
  • Protect the engine from rust and wear.

Engine oil types:

When you look at the shelves of auto parts stores, you will see many types of oils that are used for specific purposes.

Whether it is for new cars, high-tech engines, high mileage vehicles, SUVs and in addition, you will see a wide range of viscosity levels.

And if you read your own car owner's manual, you'll find out what the car manufacturer recommends and new brands. The guide indicates the steps you need to have a better fuel economy.

   1-industrial oil:

Some mention that industrial oils allow to stay longer without changing the oil, and lead to less rebound in engine parts and help the engine to work during high temperatures. Synthetic oil is specially formulated for high-tech engines.

This oil goes through a series of rigorous tests in order to achieve long-term performance because the viscosity index provides the right to protect the deposits in the engine. Synthetic oils achieve better flow at low or high temperatures and keep the engine lubricated for a longer period of time even after intensive use, but it is also more expensive than conventional oil and is not necessarily suitable for every engine.

  2-traditional oil:

You will find traditional oil standard and available in the market at reasonable prices and available and these options are committed by the American Automobile Maintenance Institute. Conventional oil is ideal for owners of good cars.

  3-High quality conventional oil:

The standard oil is suitable for all new cars and all leading brands with SL service level and is available in different viscosity grades.

Usually, car manufacturers specify W-20-5W-30 oil, especially at low temperatures. 10W-30 is suitable for it, especially at high temperatures.

The oil guarantees you 4000 miles / 4 months and proper practice and the minimum change of this type is twice a year. And if you have a car with an electronic indicator that appears on the settings panel, this warning should not be matched.

  4-Synthetic oil blend:

This oil is a dose of synthetic oils mixed with organic oil and is formulated to provide protection for the engine and high temperatures, which means that they are less volatile so that there is much less evaporation, which reduces oil loss (meaning the economy in fuel consumption).

This oil is popular with truck/SUV drivers who want a high degree of protection and a lower cost.

When should the engine oil be changed?

  • Theoretically, the oil should be changed when it loses its properties that enable it to perform its functions, and this matter cannot be known by sight or touch, because these things need a laboratory examination. For this reason, car companies advise changing the oil every period, regardless of whether the oil loses its properties or not.
  • Most car companies recommend changing the oil every year or every 10,000 km in the absence of difficult conditions.
  • When there are arduous conditions, the oil must be changed at shorter intervals (every six months or 5-8 thousand km) and not as is common among people usually with the need to change the oil once its color changes or at 3000 km.
Hard conditions are the factors that consume the engine's torque significantly, which are:
  • Frequent driving for short distances (less than 15 km).
  • Driving 50% or more in crowded cities.
  • Driving in dusty weather and poorly paved roads.
  • Driving in mountainous areas.
  • If the area is very hot or very cold.
  • Put hard on the gas pedal.
  • If the vehicle is carrying excessive loads.
  • If the car engine is old and consumes a lot of oil.

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