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  #1  
Old 03-06-2007, 11:29 AM
lrg lrg is offline
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Is there a shelf life on oil?

I usually keep an extra quart of oil with my spare tire just in case but haven't used it in quite a while. I just noticed it the other day and wondered how long it can hang there and still be good. It's synthethic so I expect it's a pretty long time but would love to hear if anyone knows the actual shelf life. Thanks.

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Old 03-06-2007, 11:34 AM
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Probably about 100 years.
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Old 03-06-2007, 11:35 AM
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I doubt it. What's it going to do, turn into oil?
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Old 03-06-2007, 12:06 PM
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as long as it's never been opened, I doubt there is a problem. even if it has been opened, contamination is the only problem I can see.
John
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  #5  
Old 03-06-2007, 12:48 PM
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That's my sense too I just wonder what with all the engineering that goes into oil these days if any of the additives break down over time. They probably do but so slowly as to be a non issue in my lifetime.
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Old 03-06-2007, 01:07 PM
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It was already sitting on the shelf for a few million years in the ground. For your time I would risk it.
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Old 03-06-2007, 01:45 PM
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Yeah, obviously the oil part is likely to be fine but remember it is a distilate of crude just like gasoline and gasoline goes bad pretty quickly. Being a lower level distilate engine oil probabily is a lot less prone to degredation but again modern oil is very definitely not just oil, it has loads of additives that may have a shelf life. It's really the additives that I'm wondering about.
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Old 03-06-2007, 02:52 PM
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Yeah, if it has been chillin' underground since it was a dinosaur, I think It'll be alright in your trunk for a pretty long time.
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Old 03-07-2007, 04:11 PM
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It will become out of date due to technology improvements long before it will degrade from age.
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  #10  
Old 03-08-2007, 01:05 AM
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Just out of curosity I sent RedLine this question and here is the response:

"Thank you for contacting Red Line Oil, our oils don't really have a
shelf life. The oil will still perform the same, I would shake it to
pick up any additives that might have settled."

I guess the additives are as durable as the oil.
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  #11  
Old 03-08-2007, 01:14 AM
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From reading on the bob is the oil guy forums they all say never to store the oil and ask the parts shop how soon the oil came in to make sure its the "freshest" available.

I think its a bunch of BS personally. I store my motor oil in the cool cabinets in my garage. And will be doing so as i buy the oil on sale and store it!

Have a closet full of rotella 5w40, many different weights of mobil 1 synthetics and some delo jugs when i used it in my SD.
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Old 03-08-2007, 06:00 AM
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Question Conspiracy Theory

I wonder if the push to use Synthetic oil contains some hidden agenda.....like oil expiration dates engineered into the mix......

SB

Sorry guys, could not help myself.......after reading a couple of the other threads this AM
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Old 03-08-2007, 06:17 AM
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I'll accept anyone's old, out of date, unopened oil for proper disposal

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