Engineered to withstand extreme operating conditions, prolong component life, and optimize fuel efficiency across diverse automotive and industrial platforms.
The global industrial and commercial transportation sectors are undergoing unprecedented regulatory and technological shifts. The transition from legacy emissions frameworks to stringent standards like Euro VI, Stage V, and US EPA Tier 4 Final has necessitated a fundamental redesign of heavy-duty diesel engines. Modern engines run hotter, operate under higher pressures, and rely heavily on complex aftertreatment systems such as Diesel Particulate Filters (DPF) and Selective Catalytic Reduction (SCR) catalysts.
Consequently, the demand for top synthetic diesel oil has pivoted from simple hydrodynamic lubrication to advanced chemical engineering. Low Sulfated Ash, Phosphorus, and Sulfur (Low-SAPS) formulations are now critical to prevent catalyst poisoning and DPF blockages. High-temperature high-shear (HTHS) viscosity retention, oxidation stability, and robust soot dispersancy represent the triad of performance benchmarks for modern procurement managers globally.
Shandong Longhai Lubrication Technology is at the forefront of this tribological evolution. By utilizing high-purity Group III synthetic base oils combined with proprietary Polyalphaolefin (PAO) blends and cutting-edge additive packages, we manufacture synthetic diesel engine oils that resist thermal breakdown, mitigate engine wear, and extend oil drain intervals (ODI) beyond conventional industry limitations.
From total cost of ownership (TCO) optimization to supply security, global buyers require more than just products—they require comprehensive industrial validation.
Industrial fleets operate across diverse climates, from sub-zero Arctic mining sites to desert transport routes. Our laboratory develops customizable Viscosity Index (VI) modifiers and pour point depressants to match specific operational profiles.
Products are verified under stringent industry specifications, including API CK-4, CJ-4, CI-4, and ACEA heavy-duty standards. This guarantees compliance for multinational operations and limits liability.
High-performance lubricants minimize mechanical friction, leading to measurable improvements in fuel efficiency (1.5% to 3% savings) and reduced downtime through extended component lifespans.
Established in 2009 and headquartered in Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. is a high-tech enterprise integrating R&D, production, and sales. With over 15 years of deep industry immersion, we have built a fully integrated supply chain designed to deliver heavy-duty lubricants to global transportation and industrial markets.
Our brand portfolio includes our flagship brand "Century Longhai" and our international strategic partnership brand, the British "A Ba" series. Underwritten by the People’s Insurance Company of China (PICC) for comprehensive quality liability insurance, our quality commitment is legally backed and commercially secure.
Our product architecture is comprehensive, featuring diesel engine oils, gasoline engine oils, gear oils, hydraulic transmission fluids, anti-wear hydraulic fluids, specialized engineering machinery oils, natural gas engine lubricants, full synthetics, automotive urea solutions, antifreeze, and industrial specialty lubricants.
Operating a highly automated 131-acre smart manufacturing plant in Zibo, China, we deliver superior processing capability, efficiency, and batch-to-batch product consistency.
Our high-speed smart filling lines utilize volumetric metering systems that regulate filling errors within 1‰ to 2‰. This limits raw material waste and ensures compliance with standard fill volumes. Compared to conventional filling processes, our system increases throughput velocity by 20% to 35%, allowing for stable lead times during high-volume wholesale cycles.
Our quality control program operates under international standards. Shandong Longhai Lubrication Technology is certified under ISO 9001:2015 (Quality Management System), ISO 14001:2015 (Environmental Management System), and ISO 45001:2018 (Occupational Health & Safety System).
Our automatic transmission fluids and engine formulations carry OEM approvals, including Mercedes-Benz certifications. By adopting advanced blending procedures and strict quality testing, we ensure our synthetic diesel oils perform in demanding operating temperatures, offering reliable lubrication and wear prevention under high loads.
Our synthetic diesel lubricants are engineered for reliable performance across a range of heavy-duty transportation and industrial applications.
Formulated for cross-border logistics fleets operating under heavy loads. Protects against soot buildup and maintains viscosity stability during extended oil drain intervals (ODI).
Provides high-shear wear protection for heavy equipment, including excavators, dump trucks, and wheel loaders, operating in dusty and high-load environments.
Formulated to protect high-torque tractors and combine harvesters during seasonal operations, preventing corrosion and varnish buildup during extended storage periods.
From initial laboratory formula development to automated packaging design, we provide a complete Private Label solution for global distributors.
Identifying viscosity grades, base stock specifications, and regional regulatory compliance targets.
Developing customized additive packages (anti-wear agents, detergents) in our laboratory.
Testing physical and chemical properties, including CCS viscosity, flash point, and Noack volatility.
Automated blending and high-speed filling, combined with private label custom printing.
Export documentation support, customs clearance, and long-term quality monitoring.
Our OEM/ODM services provide fully synthetic and semi-synthetic lubricant formulations tailored to vehicle/equipment requirements, climatic conditions, or market positioning to meet international standards such as API/ACEA. We support small-scale trial production to large-scale production, covering engine oil, transmission oil, industrial lubricants and other full categories. Filling specifications are flexible and optional.
Certified by ISO 9001 and carrying relevant industrial approvals, we provide authoritative third-party test reports to ensure product performance and compliance. Additionally, we offer packaging design, label printing, and technical documentation support to help you build a premium brand image.
Examine the testing laboratories and manufacturing environments that support Shandong Longhai's high quality standards.
Technical answers to common questions about heavy-duty diesel lubrication, viscosity standards, and formulation selection.
API CK-4 lubricants offer improved oxidation resistance, shear stability, and aeration control compared to older CJ-4 oils. CK-4 is formulated to withstand the higher operating temperatures of modern diesel engines, helping to prevent viscosity breakdown and oil oxidation. CK-4 is fully backward compatible with older engines requiring CJ-4 or CI-4 formulations.
HTHS viscosity measures a lubricant's resistance to flow under high temperature and shear conditions, representing the fluid film thickness in operating components like bearings and pistons. Formulating for an optimal HTHS balance provides adequate engine wear protection under load while minimizing internal viscous drag to help improve fuel economy.
Group III synthetic base oils undergo severe hydrocracking processes, resulting in high molecular uniformity and purity. They offer higher Viscosity Indexes (VI), improved thermal-oxidative stability, lower volatility (reduced oil consumption), and better low-temperature fluid flow compared to Group I and II mineral oils. This allows engines to operate reliably at temperature extremes.
Sulfated ash, phosphorus, and sulfur (SAPS) can accumulate as non-combustible deposits inside Diesel Particulate Filters (DPFs) and poison Selective Catalytic Reduction (SCR) catalysts. Low-SAPS formulations use alternative ashless detergent technologies to keep aftertreatment systems clean, preventing blockages and maintaining emissions compliance.
Shandong Longhai focuses on R&D investment, representing more than 5% of annual revenue, to continuously optimize lubrication technology.
Our company always adheres to the management policy of "planning big strategies, focusing on technology, creating high quality, and keeping reputation", promoting a pioneering and enterprising spirit. Our corporate philosophy is "dare to explore, innovate continuously, survive by quality, and promote development by efficiency". We aim to supply markets with balanced quality and competitive pricing, driven by research and product development.
In the future, the company will continue to use technological innovation as the engine and sustainable development as the cornerstone, working with global partners to lubricate the future together!
Explore our targeted product formulations, engineered to protect heavy industrial gear sets, hydraulic applications, and high-performance gasoline/diesel platforms.
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