How Long Can Engine Oil Generally Be Stored?

[StAlina]

Unopened engine oil can generally be stored for 5 years; the remaining oil after opening can be stored for 1 year; oil poured into the engine can be stored for 6 months. The main factors affecting the shelf life of engine oil are the storage conditions. The greater the temperature difference and humidity of the storage environment, the faster the oil deteriorates. For every 10-degree Celsius increase in temperature, the oil's lifespan is halved. For engine oil that has been stored for three years (under sealed conditions), first check the oil specifications and engine requirements to see if the oil can still meet the engine's needs. If it does, then assess whether the oil quality remains acceptable after prolonged storage. The simplest methods to check the shelf life of engine oil are to observe if the oil viscosity has changed, determine if the oil's odor has faded, and check if the oil's color has altered. When observing color changes, pay attention to any changes in the oil's additives. Additionally, filter paper or electronic instruments can be used to check if the engine oil's shelf life has expired.