Synthetic Blend Full Engine Oil Synthetic Blend CK-4 Engine Oil

Duragard® Diamond Plate Protection® Synthetic Blend API CK-4 SAE 10W-30 Motor Oil

Product Code: DURCK410/30SYNBLxx
AVAILABLE IN: 2.5 gal JUG, 5 gal PAIL, 16 gal KEG, 30 gal DRUM, 55gal DRUM, and BULK (in selected areas)

2.5 gal Jug

5.0 gal Pail
16 gal KEG, 30gal DRUM, 55gal DRUM, and BULK (in selected areas)




Gravity, ºAPI ASTM D287 32.03
Specific Gravity @60 ºF (15.6 ºC) ASTM D4052 0.8653
Viscosity @ 40ºC cSt ASTM D445 77.05
Viscosity @ 100ºC cSt ASTM D445 12.01
Viscosity Index ASTM D2270 152
Pour Point ºC (ºF) ASTM D5950 -39 ºC (-38 ºF)
Cold Cranking Simulator at (ºC), cP ASTM D5293 4934 (-25)
High Temperature/ High Shear Vis at 150 ºC, cP ASTM D5481 3.5
Noack Volatility, % loss ASTM D6375 13
Color ASTM D1500 2.5
Zinc, wt. % ASTM D5185 0.127
Phosphorus, wt. % ASTM D5185 0.115
Calcium, wt. % ASTM D5185 0.105
Sulfur, wt. % ASTM D4951 0.32
Magnesium, wt. % ASTM D5185 0.1
Molybdenum, wt. % ASTM D5185 0.0066
Sulfated Ash, wt. % ASTM D874 0.99
Nitrogen, wt. % ASTM D4629 0.105
Pumping Viscosity at (ºC), cP ASTM D4684 23,000 (-30)
TBN, mgKOH/g ASTM D2896 10
Typical test data average values only, minor variations which do not affect product performance are to be expected during normal manufacturing.

Duragard® Diamond Plate® Synthetic Blend CK-4 SAE 10W-30 is an extreme performance (HTHS) high-temperature, high-shear viscosity synthetic blend oil formulated to meet the significantly improved specifications for 2017 and newer engines while being fully compatible for 2016 and prior engines that previously used API CJ-4.

Duragard® Diamond Plate® Synthetic Blend CK-4 SAE 10W-30 will deliver more oxidization protection for hotter, heavy-duty engines, minimizing acid formation, deposits and viscosity increase, promoting reduced wear, improved shear stability, greater oxidation stability, and foam prevention.


  • * Exceeds warranty requirements of engine manufacturers that require a type API CK-4/SN premium synthetic blend SAE 10W-30 motor oil.
  • * Exceeds performance of current API CJ-4 oils.
  • * (HTHS) High-temperature, High-shear viscosity.
  • * Improved shear stability
  • * More oxidization protection for hotter, heavy-duty engines.
  • * Minimizes acid formation
  • * Reduced deposits
  • * Extended drain intervals
  • * Backwards compatible for all engines currently requiring CJ-4
  • * Meets current 2017 and newer specifications requiring CK-4
  • * Meets Ford’s stringent 2017 and newer WSS-M2C171-F1 specification.

Application Specifications

This product meets, or exceeds the requirements similar to the following manufacturers and global specifications:

API CK-4 Approved
API SN Approved
API CJ-4 Approved
API CI-4 Plus, CI-4, CH-4, CG-4, CF-2, CF Meets Requirements
API SJ, SH, SG, SF, SE, SD, SC Meets Requirements
API SM Meets Requirements
API SL Meets Requirements
ACEA E4, E2 Meets Requirements
Allison C-4 Suitable for Use
CAT ECF-3, ECF-2, ECF-1-a Meets Requirements
Cummins 20086 Meets Requirements
Cummins CES 20081, 20077, 20076 Meets Requirements
Detroit Diesel 93K218, 93K215, 93K214 Meets Requirements
Detroit Diesel 93K222 Meets Requirements
Ford WSS-M2C171-F1 Meets Requirements
Global DHD-1 Meets Requirements
JASO DH-2 Meets Requirements
Mack EOS-4.5 Meets Requirements
MAN 3575 Meets Requirements
MTU 2.1 Meets Requirements
Renault RLD-4 Meets Requirements
Volvo VDS-4.5 Meets Requirements

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