Home > Product Catalog > Automotive lubricants > Engine Oil > Diesel engine oil > Longli Long-Life Diesel Engine Oil API CI-4
Longli API CI-4 Diesel Engine Oil for Heavy-Duty Trucks
Engine Oil for Heavy-Duty Diesel Engines

Longli Long-Life Diesel Engine Oil API CI-4

Bulk Supply of Diesel Engine Oil for B2B and OEM

API CI-4 SAE 15W-40 SAE 20W-50

Heavy-duty diesel engine oil API CI-4 supplied in SAE 15W-40 and SAE 20W-50 for trucks, buses, construction machinery, and industrial diesel equipment. Available in bulk, tanker, OEM, and private label options for international B2B buyers.

Wear protection Helps Protect Critical Engine Components
Deposit Control Detergent and Dispersant Performance Support
Viscosity Options SAE 15W-40 and SAE 20W-50
Severe Operating Conditions For trucks and diesel equipment
Send Inquiry

API CI-4 Diesel Engine Oil Supplier

API CI-4 diesel engine oil is manufactured from selected base oils and an additive package that provides wear protection, detergency, dispersancy, and oxidation stability for appropriate heavy-duty diesel engines.

Available in SAE 15W-40 and SAE 20W-50 viscosity grades, the product can be supplied for heavy trucks, buses, construction equipment, and industrial diesel equipment requiring API CI-4 performance.

The formulation is designed to control sludge and deposit formation while maintaining reliable lubrication under high load and elevated temperature conditions. The required API category and viscosity grade should be selected according to the equipment manufacturer's recommendations.

Ningbo MOS Chemical Co., Ltd. manages international B2B sales and export services. Supported by lubricant manufacturing capacities invested by MOSINTER GROUP, we supply distributors, wholesalers, fleet maintenance companies, and private label buyers with bulk lubricant supply, OEM production, custom packaging, and export documentation.

International buyers can review our Range of diesel engine oils or Request a wholesale or OEM quote for API CI-4 .

API CI-4 Diesel Engine Oil Supply Advantages

  • API CI-4 performance level for appropriate diesel engines
  • SAE 15W-40 and SAE 20W-50 Viscosity Grades
  • Wear protection for critical engine components
  • Detergent-dispersant for deposit control
  • Oxidation stability under severe operating conditions
  • Wholesale and bulk supply of lubricants
  • OEM Manufacturing and Private Label Packaging
  • International export documentation support

Applications of API CI-4 Diesel Engine Oil

Heavy-duty diesel trucks
Buses and Commercial Vehicles
Construction equipment
Industrial Diesel Equipment
Diesel engine oil API CI-4 for lubrication of heavy-duty equipment

Heavy-Duty Diesel Engine Lubricant

Provides wear protection, deposit control, and reliable lubrication for diesel engines operating under high loads and severe service conditions.

API CI-4 diesel oil bulk packaging

API CI-4 Diesel Engine Oil 4L Wholesale Packaging
4L×6
API CI-4 diesel engine oil, 18L pour spout pail
18L

Frequently asked questions about API CI-4 diesel engine oil

What is API CI-4 diesel engine oil used for?

API CI-4 diesel engine oil is intended for appropriate heavy-duty diesel engines used in trucks, buses, construction, and industrial equipment. Buyers should verify the required API category in the equipment manufacturer's manual.

What viscosity grades are available?

This product is available in SAE 15W-40 and SAE 20W-50. The appropriate viscosity should be selected according to engine design, operating temperature, and equipment manufacturer recommendations.

Can you supply API CI-4 diesel engine oil in bulk?

Yes. Ningbo MOS Chemical Co., Ltd. supports wholesale orders, bulk lubricant procurement, distributor supply, and international export shipments.

Do you offer OEM and private label diesel oil manufacturing services?

Yes. Supported by the lubricant production capacities invested by MOSINTER GROUP, we provide OEM manufacturing, private label packaging, label customization, and export documentation support.