Rotella T6 0w40 - CK-4?

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The new bottles of RT6 0W-40 at my CT store aren't CK-4.

Don't think this oil is being upgraded for that spec.
 
I'll have to take a peek when I'm at the store, too. I haven't looked all the closely. Either 0w-40 CJ-4 or a hypothetical CK-4 would be safe for a modern engine with DPF, assuming it's taking an ordinary HDEO. The SAPS will probably be the same, a good guess of around 1.0. Heck, that even applies to E6 lubes.
 
https://prodepc.blob.core.windows.net/epcblobstorage/GPCDOC_GTDS_Shell_Rotella_T6_0W-40_(CJ-4)_(en)_TDS.pdf

Hope this helps
 
Never seen it on the shelf here in Michigan, usually just the 5w40 only. The only 0w40 I've seen is John Deere oil at $50 a gallon around me.
 
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