What is the lifespan of motor oil?

Friday, March 14, 2025

The proper and reliable performance of the engines of various vehicles is determined by the motor oil inside them. In fact, motor oil is somewhat considered the lifeblood of your car, ensuring the function of the engine, which is the main part of the vehicle. In this article from Saad News, we will discuss the useful lifespan of motor oil.

What is the lifespan of motor oil?

According to the Automotive Magazine Service of Saad News, most people involved in vehicle design and manufacturing believe that the useful lifespan of motor oil is approximately one year, and for the car to perform optimally, the motor oil should be changed after a year. However, this is an approximate timeframe, and since vehicles differ structurally, this cannot be generalized for all of them.

Useful Lifespan of Motor Oil


The useful lifespan of semi-synthetic and synthetic motor oils is between seven to eight years. However, the actual lifespan of motor oil depends on various factors, including how it is maintained and the type of oil used. The expiration date or shelf life of motor oil is when it loses its effectiveness. On average, regular motor oils last about five years in unopened containers.

Another question concerns how long motor oil lasts in your car. In this case, the question is: How many kilometers does motor oil last?

Driving conditions are the biggest factor in determining how long the oil will last in your car’s engine. For example, the useful lifespan of Behran Pishtaz motor oil in a car is closely related to the rapid depletion of additives in the oil. Motor oil, in its simplest form, consists of base oil and additives. Additionally, the oil change interval for Speedy 10w40 motor oil is every 120,000 kilometers.

Additives in motor oil include acid neutralizers, dispersants, and detergents, which get consumed over time. Once these additives are used up, the oil can no longer adequately protect your engine. Therefore, degraded motor oil should be changed as soon as possible.

🚘Final Thoughts In general, driving conditions are the biggest factor in determining when to change your motor oil and the actual lifespan of the oil. Short trips and driving in extremely hot or cold weather affect the oil change interval. However, on average, the useful lifespan of motor oil is every 5,000 kilometers.