
HDEO
Heavy-duty industrial oils designed for high endurance in large machinery, extending mechanical life and ensuring full operability under constant daily stress conditions.
• Advanced friction shielding for high-stress industrial environments.
• Tier-one thermal stability for extended oil drain intervals (ODI).
• API-certified blends for next-generation diesel engine tech.
15W-40 CK-4 / SN
15W-40 ENGINE OIL API CK-4 / SN is our top-of-the-line, super high-performance engine oil formulated to provide unsurpassed performance in diesel and 4-stroke gasoline engines, whether naturally aspirated or turbocharged. It is a universal oil designed for mixed fleets. It meets or exceeds performance requirements for API service grades SL*, SJ*, CF*, CF-2, CE*, CG-4, CH-4 and CI-4, as well as U.S. military specifications MIL-L-2104F, MIL-L-46152E and most other engine oil specifications of major engine manufacturers.
15W-40 ENGINE OIL API CK-4 / SN is formulated from North American Group base oils and advanced additives. It provides anti-wear protection that significantly improves fuel economy, minimizes engine wear, lowers engine operating temperatures and supports extended drain intervals. Detergent additives minimize deposits and neutralize corrosive by-products of combustion by providing extra reserve alkalinity (TBN) to prevent rust and corrosion, even when fuels with high sulfur content are in use. Shear-stable viscosity-improving polymers deliver optimized 15W-40 CK-4 / SN viscometric characteristics for maximum performance and fuel economy during both cold starts and high operating temperatures in any climate.



MOTOR OILS
15W-40 CJ-4 / SN is a high-performance diesel lubricant engineered for severe-duty industrial duty cycles. It features an HTHS viscosity of 4.2 cP and high shear stability to maintain film strength in turbocharged systems and high-pressure off-highway mechanical assets.
Customer Benefits
⚙ Excellent soot-viscosity control
⚙ Superior oxidation performance vvv
⚙ Synthetic Blend Formulation
⚙ Universal product for mixed fleet operations
⚙ Designed to optimize after treatment service life in systems on 2007 and newer trucks
⚙ Minimizes valve train wear
⚙ Excellent low temperature properties helps speed cold starts

15W-40 CI - 4 PLUS
15W-40 ENGINE OIL API CI-4+ / CI-4 / SN is formulated to deliver outstanding performance in diesel and 4-stroke gasoline engines, whether naturally aspirated or turbocharged. It is a universal lubricant designed for mixed fleet operations. It meets or exceeds API SL*, SJ*, CF*, CF-2, CE*, CG-4, CH-4 and CI-4 service categories, as well as U.S. military specifications MIL-L-2104F and MIL-L-46152E, and most major OEM engine oil requirements.
15W-40 ENGINE OIL API CI-4+ / CI-4 / SN is blended with premium North American Group II base oils and advanced additive technology. It provides robust anti-wear protection that helps improve fuel economy, minimize engine wear and reduce operating temperatures. High-detergency additives control deposits and neutralize corrosive combustion by-products by supplying reserve alkalinity (TBN) to prevent rust and corrosion, even when high-sulfur fuels are used.
Shear-stable viscosity modifiers ensure optimized 15W-40 CI-4 PLUS viscometrics for maximum performance and fuel efficiency during cold starts and at high operating temperatures in any climate. Anti-foam agents help maintain continuous lubrication to all engine components, while powerful antioxidants and dispersants extend oil life and support extended drain intervals.


20W-50 CI-4 - GAS DIESEL
20W-50 CI-4 GAS DIESEL is formulated to deliver outstanding performance in diesel and 4-stroke gasoline engines, whether naturally aspirated or turbocharged. It is a universal lubricant designed for mixed fleet operations. It meets or exceeds API SL, SJ, CF, CF-2, CE, CG-4, CH-4 and CI-4 service categories, as well as U.S. military specifications MIL-L-2104F and MIL-L-46152E, and most major OEM engine oil requirements.
20W-50 CI-4 GAS DIESEL is blended with premium North American Group II base oils and advanced additive technology. It provides robust anti-wear protection that helps improve fuel economy, minimize engine wear and reduce operating temperatures. High-detergency additives control deposits and neutralize corrosive combustion by-products by supplying reserve alkalinity (TBN) to prevent rust and corrosion, even when high-sulfur fuels are used.
Shear-stable viscosity modifiers ensure optimized 20W-50 CI-4 viscometrics for maximum performance and fuel efficiency during cold starts and at high operating temperatures in any climate. Anti-foam agents help maintain continuous lubrication to all engine components, while powerful antioxidants and dispersants extend oil life and support extended drain intervals.
SAE 30, 50, 40
LUBE monograde motor oils are formulated with advanced additive technology and highly refined, premium-quality base stocks that protect modern engines against deposits, contamination, and viscosity or thermal breakdown under severe service conditions. LUBE products are recommended for use in two- and four-cycle gasoline and diesel engines where the appropriate API service category and SAE 30, 40, or 50 viscosity grade is specified.
Customer Benefits
⚙ Resists breakdown in the most severe engine environments.
⚙ High detergency; protects against formation of sludge and varnish deposits that reduce engine life.
⚙ Contains anti-wear additives that reduce engine wear.
⚙ Turbo approved; provides excellent protection to critical turbo unit components.

DETAILED TECHNICAL DATA
PERFORMANCE ATTRIBUTES

Thermal Endurance
Blends engineered to maintain chemical integrity against extreme heat during continuous operational cycles.

Friction Control
Total reduction of internal friction via a thick oil film that persists on engine metal surfaces.

Oxidative Rigidity
Extends maintenance intervals by inhibiting oxygen-driven degradation within closed mechanical systems.
HDEO FLUID RANGE
Heavy-duty engine oils (HDEO) formulated to withstand the most severe pressures in new-generation technological industrial equipment and logistical fleets.
• Integral defense against metal wear during high-load operations.
• Deposit management for impeccable internal cleanliness.
• Superior heat resistance to maximize operational service uptime.
• Strictly compliant with API CK-4 and current global protocols.
ENGINEERING CONSULTANCY
Improve your production with the guidance of our experts. We provide technical assistance to ensure your industrial assets last much longer in the field.
VISCOSITY TESTING
GLOBAL API SEAL
LOGISTICS SUPPLY
In-plant fluid quality assessments.
Full compliance with crude oil standards.
Rapid delivery across American markets.
PRODUCT INQUIRY FORM
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Terms and Product Warranty
Terms: Ex Works: Dura-Last Lubricants USA, assumes No responsibilities after the product has left our warehouse/possession for any Loss, Damages or claims. Customer can inspect prior to / while product is loaded into the container or truck customer selects. Customer is responsible for getting product to destination and documentation. Dura-Last Lubricants USA supply Invoice, Seal, Pieces and Approximate Weight.
Product Warranty: Dura-Last Lubricants USA Warranty product Prior to shipping. Customer can if they so select test product prior to shipment in an approved Laboratory with signed sealed samples. All products meet and are what is on the label. Once Product has left Dura-Last Lubricants USA possession, Dura-Last Lubricants USA is Not responsible or warrant product from damage or quality after product leaves our possession.



