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LONGHEAD SP Premium Motor Oil - The Ultimate Protection for Modern Vehicles

Premium SN Grade Fully Synthetic Motor Oil - The Ultimate Protection for Modern Engines

Premium SL Gasoline Engine Oils - Advanced Protection for Modern Engines

Premium SJ Grade Gasoline Engine Oil - Superior Protection and Performance

High-performance fully synthetic diesel engine oil - born for the extreme

Longhai CJ-4 Synthetic Diesel Oil – Premium Protection & Performance

Longhai CI-4 PLUS Premium Diesel Oil – Ultimate Engine Protection & Fuel Efficiency

Longhai CH-4 Heavy-Duty Diesel Oil – Advanced Wear Protection & Engine Cleanliness

Longhai CF-4 Diesel Engine Oil – High-Temperature Cleanliness & Heavy-Duty Protection

Longhai Heavy-Duty Gear Oil – Ultimate Protection for Extreme Conditions

Longhai CI-4 PLUS Diesel Oil from China Suppliers - Premium Engine Protection & Fuel Efficiency from Our Factory

Longhai API CI-4 PLUS Diesel Engine Oil is expertly crafted using premium Group III hydrocracked base oils and advanced imported additives. Our innovative pulse blending technology ensures top-tier performance, even in the most demanding conditions. As a leading factory in China, we produce this high-performance diesel engine oil tailored for modern engines, providing superior wear protection, exceptional fuel efficiency, and remarkable engine cleanliness. Choose Longhai for the best quality oil from trusted suppliers in the industry.

Product Details

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

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High-performance turbocharged diesel engines

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Heavy-duty trucks and commercial fleets

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Construction and agricultural machinery

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Mining and industrial equipment

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Long-haul transportation and off-road vehicles

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.

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Extended Drain Intervals – High TBN (Total Base Number) resists acid formation, allowing for longer oil change cycles.

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Reduced Maintenance Costs – Minimizes engine wear and deposit buildup, lowering repair frequency.

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Eco-Friendly Performance – Low SAPS (Sulfated Ash, Phosphorus, Sulfur) formulation protects emissions control systems.

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Reliable in All Climates – Excellent thermal stability ensures performance in both extreme heat and cold.

Technical Specifications

Viscosity Grades

15W-40, 10W-30, 20W-50

API Classification

CI-4 PLUS

ACEA Specifications

E7, E9

OEM Approvals

Meets/Exceeds Major OEM Req.

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

What are the main benefits of Longhai API CI-4 PLUS oil?

It provides advanced wear protection, improves fuel efficiency by 5% or more, ensures excellent high-temperature stability, maintains superior engine cleanliness, and prevents sludge buildup.

Is this diesel engine oil compatible with modern emission control systems?

Yes, it is fully certified for modern engines equipped with Exhaust Gas Recirculation (EGR), Diesel Particulate Filters (DPF), and Selective Catalytic Reduction (SCR) systems.

Which viscosity grades are available for this oil?

Standard viscosity grades include 15W-40, 10W-30, and 20W-50. Other customized grades can be made available upon request.

Does it support extended oil drain intervals?

Yes, its high Total Base Number (TBN) formulation effectively resists acid formation and thermal breakdown, allowing for longer service intervals and reduced maintenance costs.

What applications is this engine oil best suited for?

It is ideal for heavy-duty commercial truck fleets, construction machinery, agricultural equipment, mining operations, and high-performance turbocharged diesel engines.