What is the shelf life of car engine oil?

[DeMila]

Generally, the shelf life of engine oil varies among different manufacturers, with most lasting over 2 years, provided it remains unopened. If the oil has been opened, it is recommended to use it within six months to prevent oxidation and deterioration. Below is more information about car engine oil: 1. The simplest method to check the shelf life of car engine oil is to observe whether the viscosity of the oil has changed, assess if the smell of the oil has faded, and check if the color of the oil has altered. When observing color changes, pay attention to variations in the additives within the oil. Additionally, filter paper or electronic instruments can be used to determine if the oil's shelf life has expired. 2. Engine oil is highly sensitive to moisture in the air, ambient temperature, and light exposure. Prolonged exposure to air and strong light typically renders it ineffective. Using engine oil past its shelf life can cause significant damage to the car's engine, such as poor lubrication and compromised cooling effects.