How to determine production date for PU?

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Just got my PU Euro 5W-40 delivered from Amazon, I think the production date is December 2013. The bottles doesn't say they meet API SN, the label just says they meet or exceed SM.

Let me know what you think:

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I got some PU 5w-40 from a local auto store a month or so ago. It was dated Dec 2013 as well, and API SM. SOPUS has a lot of extra SM bottle labels sitting around that they're trying to burn through. And what's really inside the bottle - who knows?

My guess is the labels won't change until the new PurePlus 5w-40 comes out.
 
Originally Posted By: JRed
Why does it matter?

I'm genuinely curious...


From my understanding the SN rated oil is GTL, maybe the SM bottles are too... I really hope so
 
Originally Posted By: JRed
Why does it matter?

I'm genuinely curious...

According to the spec sheet, the SN version has significantly lower Noack which some believe is an indication of a higher quality, more stable base oil.
 
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