Explore our premium grade heavy-duty engine oils, industrial gear fluids, and special application lubricants engineered to exceed standard global metrics.
Navigating the complex dynamics of high-load machinery, emissions mandates, and severe thermal envelopes.
Modern turbochargers operate under unprecedented pressures and heat profiles, requiring synthetic fluids designed for maximum thermal and oxidation stability to prevent carbon deposits and bearing failure.
Tightening regulatory standards (such as Euro VI and China VI) mandate advanced emission control systems, including DPF and SCR, which necessitate low-SAPS (Sulfate Ash, Phosphorus, and Sulfur) lubricant formulations.
To reduce operations cost, global fleet logistics demand longer drain cycles. This requires heavy-duty motor oils with high TBN (Total Base Number) retention to neutralize acidic byproducts efficiently.
At Shandong Longhai Lubrication Technology Development Co., Ltd., we tackle these global challenges by engineering proprietary molecular chains that improve shear stability and maintain viscosity index uniformity even under extreme load pressures. Our lubricants ensure minimal mechanical wear, driving downstream economic efficiency for global industrial operations.
Established in 2009 and headquartered in the industrial hub of Zibo, Shandong, we are a premier high-tech enterprise dedicated to the research, development, production, and distribution of high-grade lubrication solutions. With more than 15 years of industry experience, we have structured a complete industrial ecosystem to cater to global industrial and automotive requirements.
We manufacture under our proprietary brand "Century Longhai" alongside our international strategic partner brand, the British "A Ba" series. Our comprehensive product portfolio spans from heavy-duty diesel engine oils (CK-4/CJ-4/CI-4) and high-performance gasoline lubricants to specialized gear, turbine, transmission, and refrigeration oils.
To guarantee complete peace of mind, all our products carry comprehensive liability insurance issued by the PICC (People's Insurance Company of China), assuring superior quality and protection across global operations.
Leverage our sophisticated precision laboratory and automated packing infrastructure to develop custom formulation strategies.
Fully synthetic and semi-synthetic lubricant configurations engineered to meet the unique parameters of your target climate, vehicle load, and OEM standard compliance.
Catering to small-scale pilot batches up to large-scale mass packaging. Flexibly select your packaging design, container sizes, and labeling requirements.
Our plants operate under strict compliance with ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 standards, simplifying downstream testing and international certifications.
Receive comprehensive technical support, compliance documentation (SDS), laboratory testing data, and market strategy advice from our R&D directorate.
A rigorous breakdown of performance attributes comparing Longhai's heavy-duty formulations to global API standards.
| API Classification | Key Chemical Profile | Primary Mechanical Focus | Typical Applications | Performance Life Index |
|---|---|---|---|---|
| API CK-4 | Ultra low-SAPS formulation, advanced shear-stable polymers. | Maximum oxidation resistance, optimal piston deposit control, soot control. | Modern Euro VI & China VI fleets, vehicles with DPF and SCR systems. | Excellent (Up to 100,000 km) |
| API CJ-4 | Low ash formulation, high thermal-stability base stocks. | Protects emission control devices, controls engine wear at high temperatures. | Heavy commercial transport, agricultural and off-road machinery. | Very High (Up to 80,000 km) |
| API CI-4 PLUS | Robust TBN retention agents, dispersant-inhibitor packages. | Mitigates viscosity growth from high soot levels, counters acid buildup. | Exhaust Gas Recirculation (EGR) engines, high-speed construction equipment. | High (Up to 60,000 km) |
| API CH-4 | Standard multi-grade additives, anti-wear agents. | Protects against ring wear, controls cylinder liner scuffing. | Older naturally aspirated and turbo diesel engines. | Standard (Up to 40,000 km) |
*Note: The actual operational service intervals depend heavily on fuel sulfur contents, engine operating conditions, and maintenance schedules.
Long-haul shipping routes expose engine oils to sustained thermal strain. Our API CK-4 and CJ-4 formulations prevent shear breakdown, keeping operating viscosity optimal across varying cross-continental climates.
Dust, dirt, and heavy loads accelerate mechanical friction. Our anti-wear packages form a chemical barrier on cylinder liners and crankshaft surfaces to extend machine service life.
High-moisture environments run the risk of water ingress and chemical hydrolysis. Our specialized lubricants offer demulsibility and anti-rust defenses, safeguarding internal components.
Every batch undergoes strict testing at our central lab in Shandong. Using automatic blending and filling machinery, we secure a metering accuracy of 1‰-2‰.
This system speeds up packaging efficiency by 20%-35%, ensuring quick and reliable deliveries for international export.
A structured, quality-controlled pipeline securing seamless transition from initial consultation to final global delivery.
Analyzing application environments, viscosity metrics, and local compliance demands.
Customizing synthetic bases and additive systems inside our precision laboratory.
Conducting high-temperature shear and kinematic viscosity tests for verification.
Automated high-speed blending and filling, ensuring 1‰-2‰ metering precision.
Ongoing lubricant health monitoring, technical compliance updates, and marketing support.
Expert answers addressing chemistry, international supply chains, and industrial lubrication parameters.
Explore our industrial gear oils, transmission fluids, and motorcycle lubricants engineered for reliable performance.
Longhai
