SAE 15W-40 Full Synthetic 6 Heavy-Duty Motor Oil, API CK-4/SN

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U1P-Duty SAE 15W-40 Full Synthetic 6 Heavy-Duty Motor Oil, API CK-4/SN is formulated with synthetic base oils and a premium additive package. 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-40 Full Synthetic 6 Heavy-Duty 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-40 Full Synthetic Heavy-Duty Motor Oil API CK-4/SN highlights:

  • Full synthetic diesel and gasoline motor oil helps reduce wear and increases engine protection.
  • Strong shear stability provides stay-in-grade performance.
  • Full synthetic 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:

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Typical Properties:
SAE J300 Viscosity Grade 15W-40
Appearance Amber Transparent Liquid
Viscosity @ 40°C, cSt, ASTM D445  105.85
Viscosity @ 100°C, cSt, ASTM D445 15.1
Viscosity Index, ASTM D2270 150
CCS Apparent Viscosity, cP, ASTM D2270 5,000@-25°C
CCS Apparent Viscosity, cP, ASTM D5293 15,000@-25°C
Flash Point, °F (°C) ASTM D92 428 (220)
Pour Point, °F (°C) ASTM D97 -40 (-40)
Total Base Number, mg KOH/g, ASTM D2896 9

*The values shown are typical of current production. Some are controlled in the manufacturing process, while others are not. All of them may vary within tolerable ranges.

Exceeds Performance Requirements:
ACEA E9-12
API CK-4, CJ-4, CI-4 Plus, CI-4, and CH-4
API SN, SM, SJ, and SF
Caterpillar ECF-3
Cummins CES 20086
Daimler MB 228.31
DDC 93K222
Deutz DOC III-10 LA
Ford WSS-M2C171-F1
Mack EOS 4.5
MTU Type 2.1
Renault Trucks RLD-4
Volvo VDS-4.5


  • 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-40 Full Synthetic Heavy-Duty Motor Oil, API CK-4/SN is available in bulk quantities at substantial savings. Use of bulk oil products is environmentally proactive.


  • 5
    Best Oil

    Posted by Davel on Mar 30th 2022

    I’ve been using this oil for a while and I can’t be happier, this is a great product, the engine works smooth. I use to change the oil every 15000 miles and still the oil is in good conditions. My Company is in Texas and The shipping from Florida is very fast with FEDEX. I recommend this product to my fellows truckers. Equipment: 2009 Freightliner Cascadia with Series 60 Detroit engine 14.0 L.

  • 5

    Posted by MICHEL DAVIGNON on Sep 24th 2021

    this is good oil at a very good quality and price

  • 5

    Posted by willie powell on Apr 11th 2021

    good oil.

  • 5
    6.0 powerstroke

    Posted by Alex Vasquez on Feb 26th 2021

    Great price, truck runs great, what more can I say?