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Old Aug 13, 2023 | 09:04 AM
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Default Mobil 1

How long does an unopened quart of Mobil 1 last? I discovered one that's at least 15 or more years old in my garage.
Question, should I throw it away or use it? I. read oil lasts forever.
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Aug 13, 2023, 11:05 AM
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I would be converned about the additives. Mobile 1 has changed a lot in 15 years, I have been using it longer than that.

I would not hesitate to put it in the average non-performance vehicle. In my high-performance Vette, not so much. jmho
Old Aug 13, 2023 | 09:19 AM
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I'd use it.
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Old Aug 13, 2023 | 09:50 AM
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Oil lasts forever, never loses viscosity, only gets dirty or contaminated during use.
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Old Aug 13, 2023 | 09:58 AM
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As long as it's sealed and no moisture incursion I don't see a problem
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Old Aug 13, 2023 | 11:05 AM
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I would be converned about the additives. Mobile 1 has changed a lot in 15 years, I have been using it longer than that.

I would not hesitate to put it in the average non-performance vehicle. In my high-performance Vette, not so much. jmho
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Old Aug 13, 2023 | 11:22 AM
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Lawn mower, snow blower, small engine oil or add to something that takes several quarts or use half in a change and half in another oil change. Do anything but waste it.
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Old Aug 13, 2023 | 11:34 AM
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Originally Posted by Vette Jockey
I would be converned about the additives. Mobile 1 has changed a lot in 15 years, I have been using it longer than that.

I would not hesitate to put it in the average non-performance vehicle. In my high-performance Vette, not so much. jmho
Good point and thanks for all the responses. The oil dates back to 2005 for my old C6.
I'm a bit concerned it is synthetic not regular oil.
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Old Aug 14, 2023 | 07:30 AM
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Oil is cheap, why take chances?

I also date all my expendables, oil, fuel stablizer, fuel additive, etc...........
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Old Aug 14, 2023 | 09:46 AM
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I would use it. You may wnat to contact Mobil 1 and ask them. They would know.
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Old Aug 14, 2023 | 09:53 AM
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Mobil recommends a 5 year shelf life for their fully synthetic oil.

Mobil 1™ shelf life | Mobil™
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Old Aug 14, 2023 | 03:33 PM
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Originally Posted by NW-99SS
Mobil recommends a 5 year shelf life for their fully synthetic oil.

Mobil 1™ shelf life | Mobil™
Thanks, exactly what I was looking for.
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Old Aug 15, 2023 | 12:17 AM
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Originally Posted by NW-99SS
Mobil recommends a 5 year shelf life for their fully synthetic oil.

Mobil 1™ shelf life | Mobil™
Interesting - did not know that.
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Old Aug 15, 2023 | 07:18 AM
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As mentioned above, throw it in a mower, snowblower, a beater, why waste it.
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