https://bobistheoilguy.com/forums/ubbthreads.php/topics/4226505/%22New%22_Rotella_T6#Post4226505
Shell has made over all their oils over into approved CK-4 spec variants, by simply doing what the Gov. wants them to do to meet the new CK-4 standards and requirements --- some of which changes now have to do with diesel CARS and
the new CK-4 is not purely 100% truck requirement based as was done in the past.
Shell is not releasing their new formulation's nitty gritty details until
after the first of the year, in accordance to the new specific "phase in requirements" of the new rules.
There are questions about other brands of HDEO actually shipping their old oils in the new bottles while in the interim phase in period -- Shell isn't getting into that for much so far, as
they are shipping the new stuff in the new bottles, they are just not saying everything about it right at first as they are not permitted to do so until after the first of the new year. Hey, they feel they cannot say they are "honoring" a spec that hasn't taken effect yet.
But the bottling lines have to roll and the new bottles are what the bottle machines are cranking out by the 10s of thousands. The change is upon us, willy nilly.
VOAs are being done by lots of folks as we speak, but not much data has been generated that hasn't been rendered "doubful" by the very odd phase in requirements of the CK-4 changeover.
It would take a VOA on a fresh bottle made after the first of January, 2017 to really have any sort of real hard VOA answers as the phase in period will be over by then.