Life expectancy of unused engine oil?

[LRod]

Groovy, wishing you and everyone else a kick ass Christmas! And I’m not saying this just cause we’re apparently part of the badass CST Lift Cult, lmao!


Sent from Above

Lol!! Merry Christmas as well man!

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[BlaineBug]

Oil doesn't go bad from sitting on the shelf unused.  That's a fairy tale.

[Black02Silverado]

Here is some info on shelf life.https://blog.amsoil.com/what-is-the-shelf-life-of-amsoil-synthetic-lubricants/?zo=521390

[Jacoby]

It’s absolutely hilarious to me that there is an actual thread 3 pages long about the shelf life of a FOSSIL fuel. It’s already tens, hundreds of millions of years old and you’re talking about a shelf life.  
 

its getting harder and harder to take some people on here serious anymore. 

[TXGREEK]

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[TXGREEK]

Who would’ve ever have thought that the oil you’re purchasing could already have many years of shelf life already on it. Wow!


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[Donstar]

1 hour ago, Jacoby said:

It’s absolutely hilarious to me that there is an actual thread 3 pages long about the shelf life of a FOSSIL fuel. It’s already tens, hundreds of millions of years old and you’re talking about a shelf life.  
 

its getting harder and harder to take some people on here serious anymore. 

I would have agreed with this a few years ago but I am somewhat interested in this topic.   A few years ago,  I used a previously unopened  tube of GE Silicone caulk to join pieces of a  bathroom fixture. The product, I discovered later, was past its "best before" date and wouldn't cure/dry.  I know it's not oil but I would have scoffed at someone suggesting unopened tub & tile caulk has a best before date!  However, I am not seeing much evidence either way on this thread.  The video on reading date codes does nothing to prove an expiry date.  

[KARNUT]

I would have agreed with this a few years ago but I am somewhat interested in this topic.   A few years ago,  I used a previously unopened  tube of GE Silicone caulk to join pieces of a  bathroom fixture. The product, I discovered later, was past its "best before" date and wouldn't cure/dry.  I know it's not oil but I would have scoffed at someone suggesting unopened tub & tile caulk has a best before date!  However, I am not seeing much evidence either way on this thread.  The video on reading date codes does nothing to prove an expiry date.  

They put dates on everything these days. I had a hot dog over the weekend. Pulling the mustard out of the fridge I noticed the best used date of January of last year. My wife laughed and used it, I followed. Still here. Some of that stuff is just to get people to buy before you need too.


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[MaverickZ71]

SURELY AMSoil lasts longer on the shelf than Havoline . . . . . 

[KARNUT]

SURELY AMSoil lasts longer on the shelf than Havoline . . . . . 

It’s possible, I’ve had some spinning in my supercharger for ten years. Still barely can see clean. LOL.


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[TXGREEK]

I don’t believe a group 4-5 oil has an expiration, possibly due to it being (for the most part) 100% man made.

 

It’s conventional oils and oils made from dinosaur fossils that I’d be much more worried about coming from your favorite over the counter distributor like walmart or other auto parts stores. As the video I posted shows, some have much less shelf life than others and that would really suck if you bought oil to keep in your garage that already has 2 years taken out of its 3 year shelf life only to use it as later it’s already expired. Group 4-5 oils would be a better choice for those that like to purchase in bulk in order to stock pile on for any later use.

 

 

Sent from Above

 

 

[TXGREEK]

I could be mistaken but I believe Redline and Amsoil are the only two that have zero expiration dates.


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[LRod]

SURELY AMSoil lasts longer on the shelf than Havoline . . . . . 

Hahahahaha. Now that was funny!

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[LRod]

It’s absolutely hilarious to me that there is an actual thread 3 pages long about the shelf life of a FOSSIL fuel. It’s already tens, hundreds of millions of years old and you’re talking about a shelf life.  

 

its getting harder and harder to take some people on here serious anymore. 

It's synthetic oil that were talking about.

 

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[Grumpy Bear]

History

 

One of the first additives used in motor oil was Sperm Whale oil to aid in the lubricants 'oiliness' or slipperiness. Once band...

Castor Bean oil replaced whale oil. Neither of these are 'mineral oils' and go rancid. Spoil. Have a shelf life and used in mineral oils as additives gave them a shelf life as well. But only because the fatty acid fats uses as additives went rancid. 

 

Mineral oils by themselves do not go rancid. Do not spoil. Have no shelf life. 

 

Castor oil and many-MANY other 'veggie' oils used as lubricants are no longer being used 'natural' but are subject to esterification. They are processed into polymers. Hence ester waxy additives used as aniline point suppressants and POE's used as lubricating fluids do not have self lives.

 

Polymers have lives measured in thousands of years and mineral oils...well....they just don't spoil. 

 

While not a single whale has been killed for a motor oil in quite some time, the story continues.