How Long is the Shelf Life of Opened Engine Oil?

[LincolnLee]

Here is the relevant introduction about the shelf life of engine oil: 1. Unopened engine oil: The shelf life is generally about 5 years, and there are also engine oils with a shelf life of more than ten years. 2. Engine oil poured into the engine: For engine oil that has been poured into the engine and used occasionally, such as for cars that are not driven for long periods, if the oil was changed recently and the car will be left unused for a long time, it is recommended to replace the oil after more than 6 months. If the engine oil in the car has been used for a relatively long time, the storage period should be shortened, and it is recommended to replace it after more than 3 months of storage before the next use. 3. Remaining engine oil after maintenance: The remaining engine oil after maintenance can be stored for about 1 year if properly preserved, but the best recommendation is to use it up within half a year.