Longhai CI-4 PLUS Diesel Oil: Premium Engine Protection & Fuel Efficiency from China Suppliers and Factory
Key Benefits
✅ Advanced Wear Protection & Fuel Savings
- Enriched with extreme-pressure anti-wear additives* to significantly reduce engine wear, even under heavy loads.
- Improves fuel efficiency by 5% or more, lowering operational costs while reducing environmental impact.
- Optimized friction modifiers minimize energy loss, ensuring smoother engine operation and extended component life.
✅ Exceptional High-Temperature Performance
- Superior low-temperature fluidity ensures quick cold starts and instant lubrication in freezing conditions.
- High-temperature shear stability maintains consistent oil pressure, protecting turbocharged and multi-valve engines under extreme heat.
- Resists thermal breakdown and oxidation, extending oil life and reducing sludge formation in high-stress applications.
✅ Enhanced Engine Cleanliness
- Powerful detergents and dispersants prevent the formation of high-temperature deposits and low-temperature sludge, keeping critical engine components clean for optimal performance.
- Reduces harmful buildup in Exhaust Gas Recirculation (EGR) and turbocharger systems, prolonging engine lifespan.
- Maintains piston cleanliness, preventing ring sticking and maintaining compression efficiency.
✅ Certified for Modern Engines – API CI-4 PLUS
- Meets API CI-4 PLUS specifications, providing enhanced protection for engines equipped with Exhaust Gas Recirculation (EGR) and aftertreatment systems.
- Compatible with Ultra-Low Sulfur Diesel (ULSD), helping meet stringent emissions standards (EPA, Euro VI).
- Ideal for engines with Diesel Particulate Filters (DPF) and Selective Catalytic Reduction (SCR), ensuring compliance with environmental regulations.
Ideal Applications
Why Choose Longhai API CI-4 PLUS Diesel Engine Oil?
Longhai’s advanced formula is engineered for maximum durability, efficiency, and protection, making it the ideal choice for modern diesel engines operating under extreme conditions.
Technical Specifications
| Viscosity Grades | 15W-40, 10W-30, 20W-50 (available upon request) |
| API Classification | CI-4 PLUS |
| ACEA Specifications | E7, E9 |
| OEM Approvals | Meets or exceeds requirements for major diesel engine manufacturers |
Conclusion
For engines that demand peak performance, fuel efficiency, and long-term reliability, Longhai API CI-4 PLUS Diesel Engine Oil is the ultimate solution. Whether you operate a heavy-duty truck fleet, construction equipment, or agricultural machinery, this oil ensures optimal protection and cost-effective operation.
Upgrade to Longhai CI-4 PLUS today and experience the difference in performance and durability!
Frequently Asked Questions
Q: What is API CI-4 PLUS diesel engine oil?
API CI-4 PLUS is a high-performance diesel engine oil standard designed to provide superior protection against wear, soot-induced viscosity increase, and oxidation, specifically formulated for modern engines equipped with EGR (Exhaust Gas Recirculation) systems.
Q: Can Longhai API CI-4 PLUS oil be used in older engines?
Yes, API CI-4 PLUS is fully backward compatible with older API categories such as CI-4, CH-4, and CG-4, making it highly suitable and safe for older diesel engines.
Q: How does this oil improve fuel efficiency?
By utilizing optimized friction modifiers and advanced anti-wear additives, it significantly reduces internal engine drag and energy loss, contributing to a fuel savings of 5% or more.
Q: Is this oil compatible with modern emissions control systems?
Yes, it is designed to be compatible with emissions control systems like Diesel Particulate Filters (DPF) and Selective Catalytic Reduction (SCR), helping fleets comply with EPA and Euro VI emissions regulations.
Q: What viscosity grades are available?
The standard viscosity grades include 15W-40, 10W-30, and 20W-50. Customized viscosity grades can also be formulated upon request to suit specific operating climates.
Q: How does it help extend oil drain intervals?
It features a high Total Base Number (TBN) that effectively neutralizes harmful acids generated during combustion, resisting thermal breakdown and allowing for longer intervals between oil changes.