COGENT ACTIVE SUPREME 10W-40 CK-4/SN SERIES
COGENT ACTIVE SUPREME 10W-40 Fully Synthetic Diesel Engine Oil | API CK-4/SN
Product Description :
COGENT ACTIVE SUPREME 10W-40 CK-4/SN SERIES is an advanced performance, low-SAPS fully synthetic diesel engine oil formulated with severely refined base stocks and sophisticated technology additives to provide outstanding engine performance. As a top-tier product developed by a premier engine oil manufacturer, this high performance engine oil formulation is custom-engineered to meet the strict demands of the latest low-emission designs. It provides full engineering compatibility for vehicles integrated with advanced exhaust after-treatment systems, including Diesel Particulate Filters (DPF), Selective Catalytic Reduction (SCR), and Diesel Oxidation Catalysts (DOC).
This versatile motor oil offers excellent backward compatibility down to API CJ-4 specifications, making it an ideal choice for both new and old diesel engines operating across heavy-duty On and Off-highway applications. Furthermore, it satisfies the requirements of gasoline engines demanding premium API SN performance. This premium automotive engine oil is specifically structured by a trusted lubricant manufacturer to supply excellent wear and engine protection, outstanding high-temperature performance, reliable engine cleanliness, and extended drain capabilities with excellent TBN retention, standing as a premium choice among global automotive lubricants.
Features & Benefits :
• Excellent oil consumption control, due to very oil low volatility and less oil top-up during operation.
• Outstanding oxidation & thermal stability reduces sludge deposits and keeps the engine cleaner.
• Excellent engine protection by providing outstanding protection against corrosive & abrasive wear.
• Improved shear stability maintains viscosity in-grade under severe, high temperature service conditions.
• Excellent low temperature pumpability ensures smooth cold starting and improved fuel economy.
• Excellent TBN reserves provide improved acid neutralization and corrosion protection, which helps in extending oil drain interval in both new & old engines using either low (500 ppm) or ultra-low (15 ppm) sulfur diesel fuel
Specifications :
COGENT ACTIVE SUPREME 10W-40 CK-4/SN SERIES meets or exceeds the following international and OEM specifications:
• API CK-4, CJ-4, CI-4 Plus, CI-4, CH-4, CF, CF-2, SN, SM, SL • CAT ECF-3
• ACEA E9/E7-16 • MB 228.31
• MTU OIL Category 2.1 • VOLVO VDS-4.5
• MACK EOS-4.5 / FORD WSS-M2C171-F1 • MAN 3275 / 3575
• Detroit Diesel Power Guard 93K222 • Renault VI RRLD-4
• CUMMINS CES 20086 • Deutz DQC III-10 LA / JASO DH-2
Typical Characteristics :
COGENT CK-4/SN | Test Method | Units | Typical Value 10W-30 | Typical Value 10W-40 |
Density @ 15°C | ASTM D 4052 | gm/cc | 0.865 | 0.870 |
Viscosity @ 100°C | ASTM D 445 | cSt | 10.4 | 14.4 |
Viscosity @ 40°C | ASTM D 445 | cSt | 62.6 | 96 |
Viscosity Index | ASTM D 2270 | — | 155 | 155 |
Pour Point | ASTM D 97 | °C | -39 | -39 |
Flash Point (COC) | ASTM D 92 | °C | 215 | 225 |
Total Base Number | ASTM D 2896 | mg KOH/g | 9.6 | 9.6 |
Sulfated Ash | ASTM D 874 | % wt | 0.9 | 0.9 |
CCS Viscosity | ASTM D 5293 | cP | 6050 @ -25°C | 6200 @ -25°C |
Note: The above figures are typical of blends with normal production tolerance and do not constitute a specification

