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Does Engine Oil Expire?

I’ve had several quarts of oil sitting back on a top shelf in my garage for a long time. I think they’ve been there for at least two or three years, and I’m not sure if they’re still good. Does engine oil go bad?

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Patrick Price · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
We’ve all been there. It’s easy to lose track of everything that’s been tossed up onto a garage shelf. The short answer is yes—engine oil expires if it sits too long. The good news is, yours might still be good!
Most conventional oil will expire in 2-5 years. Synthetic oil will last even longer than this, usually about 8 years. The containers should have an expiration somewhere on them that you can check.
Oil will expire faster if it is opened. If any of the quarts are already opened, they are probably not still usable.
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