What is the general shelf life of engine oil?

1 Answers
StGrace
07/30/25 1:13am
Engine oil has a shelf life of 5 years. Below is a detailed explanation of engine oil shelf life: 1. Unopened engine oil: Typically has a shelf life of about 5 years, though some oils can last over 10 years. 2. Engine oil poured into the engine: For oil that has been poured into the engine but used only occasionally—such as in vehicles that will be left unused for extended periods—if the oil was recently changed before long-term storage, it is recommended to replace it with fresh oil after more than 6 months. If the oil has already been used for a considerable period, such as covering half the usual maintenance interval mileage, the storage time should be reduced. It is advisable to replace the oil after more than 3 months of storage. 3. Leftover oil after maintenance: The remaining oil from maintenance can be stored for about 1 year if properly preserved. However, as a precaution, it is recommended to use it within 6 months.
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