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Diesel Engine Oil CI-4 20W-50 S10 for Heavy-Duty Trucks, Mining & Construction Equipment

Diesel Engine Oil CI-4 20W-50 S10 for Heavy-Duty Trucks, Mining & Construction Equipment

Product Description

CI-4 20W-50 S10 Diesel Engine Oil is formulated for heavy-duty diesel engines operating under high load, high temperature, and long working-hour conditions. Using high-quality mineral base oil and advanced additive technology, it helps protect engines used in trucks, construction machinery, mining equipment, agricultural vehicles, and industrial diesel systems. In real working environments such as long-distance transportation, construction sites, mining operations, and hot climate regions, diesel engines often experience increased wear, sludge buildup, oil oxidation, and unstable lubrication. This 20W-50 heavy-duty diesel engine oil helps maintain stable oil film strength, reduce engine wear, and improve engine cleanliness during continuous operation. The formulation is especially suitable for engines equipped with EGR (Exhaust Gas Recirculation) systems, helping reduce soot-related deposits and extending engine service life under demanding operating conditions.
• Packaging: 18L, 200L
• Customized packaging available upon request
Diesel Engine Oil CI-4 20W-50 S10 for Heavy-Duty Trucks, Mining & Construction Equipment
Diesel Engine Oil CI-4 20W-50 S10 for Heavy-Duty Trucks, Mining & Construction Equipment

Specifications and Approvals

  • • API CI-4/SL

Performance Benefits

  • • Strong Anti-Wear Protection
    Helps protect pistons, camshafts, bearings, and valve systems under heavy-load diesel engine operation.
  • • Reliable High-Temperature Stability
    Maintains lubrication performance in hot climates, long-haul transportation, and continuous industrial operation.
  • • Helps Reduce Sludge and Carbon Deposits
    Detergent and dispersant additives help keep engines cleaner and reduce soot accumulation caused by EGR systems.
  • • Stable Oil Film Under Heavy Load
    20W-50 viscosity provides strong oil film protection for older engines and high-temperature heavy-duty equipment.
  • • Supports Longer Engine Service Life
    Reduces component wear and helps lower maintenance frequency for fleet operators and equipment owners.

Applications



Applications



CI-4 20W-50 S10 Diesel Engine Oil is recommended for heavy-duty trucks, mining machinery, construction equipment, agricultural tractors, buses, commercial diesel vehicles, generators, and industrial diesel engines requiring API CI-4 lubricants.



It performs particularly well in:





  • Long-distance transportation fleets





  • Hot climate operating environments





  • Mining and quarry equipment





  • Construction and earthmoving machinery





  • Agricultural and farming equipment





  • Diesel engines equipped with EGR systems





  • High-load industrial diesel equipment





For operators facing high temperatures, dusty environments, and continuous heavy-duty operation, this oil helps improve lubrication stability, reduce oil consumption, and maintain reliable engine protection.





FAQ




What engines is CI-4 20W-50 S10 suitable for?



It is suitable for medium and heavy-duty diesel engines used in trucks, construction machinery, mining equipment, agricultural machinery, buses, and generators requiring API CI-4 engine oil.



Why choose 20W-50 diesel engine oil?



20W-50 provides a thicker oil film and stronger high-temperature protection, making it suitable for heavy-load operation, hot climates, and older diesel engines.



Is this oil suitable for EGR diesel engines?



Yes. The formulation is designed for diesel engines equipped with EGR systems and helps reduce soot deposits and wear.



Can this oil reduce engine sludge and deposits?



Yes. Its detergent and dispersant additive system helps control sludge, carbon buildup, and piston deposits during heavy-duty operation.



Do you support OEM or private label diesel engine oil?



Yes. We provide OEM and private label services including customized packaging, labeling, branding, and bulk supply solutions for distributors worldwide.






Looking for a Reliable CI-4 Diesel Engine Oil Supplier?



YUANGEN Petrochemical supplies high-performance CI-4 20W-50 diesel engine oil for distributors, wholesalers, construction contractors, mining companies, and industrial diesel equipment users worldwide.





  • ✔ Stable bulk supply capacity





  • ✔ OEM / Private Label support





  • ✔ International shipping and logistics service





  • ✔ Technical support for diesel engine lubrication





  • ✔ Customized packaging solutions





Contact us today for pricing, product specifications, or customized diesel lubrication solutions for your equipment.



Get detailed product specifications and have our technical experts confirm whether this formulation is suitable for your equipment.
ACCESS PRODUCT DATA

Typical Test Data

Test Item

Result

Method

Density (20℃), kg/m³

876

ASTM   D4052

Kinematic Viscosity (100℃) mm²/s

20.52

ASTM   D445

Kinematic Viscosity (40℃) mm²/s

179

ASTM   D445

Viscosity Index

134

ASTM   D2270

Pour Point,   ℃

-32

ASTM   D97

Flash Point   (COC), ℃

242

ASTM   D92

Viscosity, Cold Crank   (-15℃), mPa.s

7860

ASTM D5293

Base Number, mg KOH/g

12.8

ASTM D2896

Sulfated   Ash, mass%

1.6

ASTM   D874


Health, Safety & Environment

The product is unlikely to present any significant health or safety hazard when properly used in the recommended application, and good standards of personal hygiene are maintained.
Avoid contact with skin. Use impervious gloves with used oil. After skin contact, wash immediately with soap and water.
Take used oil to an authorised collection point. Do not discharge into drains, soil or water.

Storage

All packages should be stored under cover. Where outside storage is unavoidable, drums should be laid horizontally to avoid the possible ingress of water and damage to drum markings. Products should not be stored above 60°C, exposed to direct sunlight or freezing conditions.
The indicated properties are typical of those obtained with normal production tolerance and do not constitute a specification. All the information contained in this document is considered accurate as of date of printing, and no warranty or representation, expressed or implied is made as to the accuracy of the data and information in this publication. The information contained herein is subject to change without notice.
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For data security, YUANGEN does not disclose detailed product information on this website. Please briefly describe your equipment and application, and our technical team will review your request, provide accurate product specifications, and offer guidance on equipment compatibility.
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