What changed with CK-4 oil?

[Nilao]

heres a sample of an oil candidate. What do you guys think of it? It meets cummins specs


The results of the tests conducted on this sample meet the requirements of a SAE 15W-40 engine oil and are consistent with the requirements for an API CJ-4/CI-4 Plus/SM Service Classification.

PHYSICAL TESTS Standard/ranges-a 15W-40
TBN, mg KOH/g, (ASTM D2896) 7.39 to 9.75 8.25
Viscosity @ 100ºC, cSt, (ASTM D445) 12.5 to <16.3 14,9
Viscosity @ 40ºC, cSt, ASTM D445 105 to 129 109
Viscosity Index (ASTM D2270) 130 to 146 142
Viscosity @ -20ºC mPa s (cP) (ASTM D5293) 7,000 Max 5,597
ELEMENTAL ANALYSIS-b
Additives
Calcium 1,184 to 2,603 1,191
Magnesium 8 to 911 842
Phosphorus, ppm 877 to 1,312 1,053
Zinc, ppm 1,012 to 1,490 1,226
Molybdenum, ppm 0 to 117 44
Barium, ppm <1 <!

Boron, ppm 1 to 679 2
Silicon, ppm-d 4 to 8 8
Potassium, ppm 2 to 5 1
Manganese, ppm <1 <1
Titanium, ppm <1 <1
Copper, ppm <1 <1
Sodium, ppm 1 to 6 7
Vanadium, ppm <1 <1
Contaminants
Silver, ppm 1 <1
Aluminum, ppm 1 to 2 3
Chromium, ppm <1 <1
Iron, ppm 1 to 2 <1
Nickel, ppm <1 <1
Lead, ppm <1 <1
Antimony, ppm <1 <1
Tin, ppm <1 <1
a- Standards, shown in black are established by API, SAE and others, ranges shown in green, represent the high and low data for the brands reported in the first two sample sets examined in 2013 .
b-Test Method for metal analysis is ASTM ASTM D5185.





Viscometrics
The viscometrics for the sample tested meet the required targets for a 15W-40.