SAE 15W-50 Heavy Duty 4 Motor Oil, API CK-4/SN

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U1P-Duty SAE 15W-50 Heavy Duty 4 Motor Oil, API CK-4/SN is formulated with premium paraffinic base oils Group II and advanced additives technology for high performance and an enhanced engine life. This oil is designed for use in for use in high-speed four-stroke cycle diesel engines designed to meet 2020 model year on-highway and Tier 4 non-road exhaust emission standards as well as for previous model year diesel engines. This oil is especially effective at sustaining emission control system durability where particulate filters and other advanced after treatment systems are used.

U1P-Duty SAE 15W-50 Heavy Duty 4 Motor Oil, API CK-4/SN
provides enhanced protection against oil oxidation, viscosity loss due to shear, and oil aeration as well as protection against catalyst poisoning, particulate filter blocking, engine wear, piston deposits, degradation of low- and high-temperature properties, and soot-related viscosity increase. In addition to API CK-4, this oil exceeds the performance criteria of CJ-4, CI-4 with CI-4 PLUS, CI-4, and CH-4 and can effectively lubricate engines calling for those API Service Categories. When using this product in conjunction with fuel containing higher than 15 ppm of sulfur, consult the engine manufacturer for service interval recommendations.

Ultra1Plus™ SAE 15W-50 Conventional Heavy-Duty Motor Oil API CK-4/SN highlights:

  • Conventional diesel and gasoline motor oil helps reduce wear and increases engine protection.
  • Strong shear stability provides stay-in-grade performance.
  • Conventional motor oil minimizes oil consumption in all types of driving conditions.
  • Enhanced oxidation control.
  • Ultra1Plus™ is designed to maintain its viscosity while protecting the engine against thermal breakdown at high temperatures.

Ultra1Plus™ can export products worldwide. Products available for larger purchases, truckloads and pallets, please CONTACT US


Safety Data Sheets & Product Information:





warning.png WARNING: California Proposition 65

Typical Properties:


SAE J300 Viscosity Grade



Amber Transparent Liquid

Viscosity @ 40°C, cSt, ASTM D445


Viscosity @ 100°C, cSt, ASTM D445


Viscosity Index, ASTM D2270


CCS Apparent Viscosity, cP, ASTM D2270


CCS Apparent Viscosity, cP, ASTM D5293


Flash Point, ºC ASTM D92


Pour Point, ºC, ASTM D97


Total Base Number, mg KOH/g, ASTM D2896                                 

Exceeds Performance Requirements:                                              
API CK-4, CJ-4, CH-4, CG-4, CF-4, CE, CD               Deutz DQC III-10 LA
ACEA E9-12 Ford WSS-M2C171-F1     
Cummins CES 20086 Mack EOS 4.5
DDC 93K222 Caterpillar ECF-3
Damiler MB 228.31 Volvo VDS-4.5
Renault Trucks RLD-4 MTU Type 2.1
May also be used in gasoline engine requiring the API SN, SM, SJ, and SF specification.


  • Avoid extremes of temperature.
  • Product in cardboard cartons must be stored under cover and away from damp conditions.
  • Drums (barrels) should be stored under cover if possible.
  • If drums must be stored outside then lay them on their side to prevent water collecting around the bungs.

Note: SAE 15W-50 Conventional Heavy-Duty Motor Oil, API CK-4/SN is available in bulk quantities at substantial savings. Use of bulk oil products is environmentally proactive.