Explore our high-performance heavy-duty engine, gear, and hydraulic oils engineered for extreme operational environments.
The global heavy-duty diesel lubrication market is undergoing a seismic transition. As environmental policies tighten across the European Union, North America, and East Asia, logistics operators and industrial developers face the dual challenge of reducing emissions while maximizing operational reliability. Standard diesel engine oils no longer suffice for modern high-pressure common rail (HPCR) injection systems, diesel particulate filters (DPF), exhaust gas recirculation (EGR), and selective catalytic reduction (SCR) catalysts.
From the perspective of Google’s Search Quality Rater Guidelines, establishing authority on diesel lubricants requires a deep technical understanding of chemical composition. Today's commercial fleets demand low-SAPS (Sulfated Ash, Phosphorus, and Sulfur) technologies. High SAPS levels trigger catalytic converter poisoning and accelerate DPF plugging, leading to unscheduled downtime and massive financial losses. Consequently, the transition from legacy API classes like CF-4 and CH-4 to advanced formulations like API CJ-4 and CK-4 has become a technical and economic necessity worldwide.
As a leading Chinese exporter, Shandong Longhai Lubrication Technology Development Co., Ltd. addresses this paradigm shift by developing advanced diesel engine oils that meet international OEM standards. We leverage premium Group II/III hydrocracked base oils and cutting-edge additive chemistry to ensure excellent thermal stability, dispersancy, and anti-wear protection for heavy transport, shipping, and mining sectors.
Established in 2009 and headquartered in Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. is a distinguished high-tech enterprise integrating R&D, manufacturing, blending, and international export. For over 15 years, we have meticulously built an integrated petrochemical supply chain dedicated to delivering high-end lubrication solutions for global industrial and automotive markets.
With our proprietary domestic brand "Century Longhai" and the international strategic cooperation brand British "A Ba" series, our dynamic portfolio covers diesel engine oil, gasoline engine oil, gear oil, hydraulic transmission oil, anti-wear hydraulic oil, special machinery lubricants, natural gas engine oil, fully synthetic fluids, automotive urea (DEF), antifreeze, and industrial specialty oils. Demonstrating our uncompromising commitment to security, our product lines are fully backed by PICC (People's Insurance Company of China) quality liability insurance, guaranteeing maximum peace of mind for our worldwide partners.
To support global supply chains, Shandong Longhai complies with international quality, safety, and environmental protection guidelines. The company has officially passed the rigorous ISO 9001:2015 Quality Management System Certification, ISO 14001 Environmental Management System Certification, and OHSAS 18001 / ISO 45001 Occupational Health and Safety Management Certification.
Furthermore, our automatic transmission fluids and advanced engine oils have earned prestigious OEM approvals, including official Mercedes-Benz certification. These accreditations highlight our capability to formulate lubricants that perform reliably under extreme mechanical shear, load pressures, and temperature swings, reducing equipment maintenance expenses and extending operational lifetimes.
Tailoring chemical formulas to meet the geographic, climatic, and mechanical realities of diverse operational regions.
Operating trucks across high-altitude roads like the Andes or Pamirs requires lubricant viscosity profiles that remain fluid at sub-zero temperatures while protecting the engine under high thermal loads during steep climbs. Our API CI-4 PLUS and CK-4 synthetic oils offer rapid cold-start lubrication, preventing cold-engine wear during mountain ignition cycles.
Heavy machinery in regions like Southeast Asia, Africa, and Northern Australia operates under high temperatures, high humidity, and heavy dust. These environments accelerate oil oxidation and soot accumulation. Our formulations contain robust dispersants and anti-oxidants, preventing oil thickening and sludge buildup under continuous load.
Marine environments require lubricants that resist moisture contamination and salt-spray oxidation. Shandong Longhai’s diesel engine oils maintain a strong protective film on cylinder walls and crankshaft bearings, preventing rust and bearing corrosion in marine auxiliary setups.
The evolution of diesel engine technologies requires continuous updates to lubricant formulations. As global emission regulations tighten (e.g., Euro VI, China VI, EPA Tier 4), internal engine temperatures rise due to advanced exhaust gas recirculation systems, and fuel injection pressures can exceed 2,000 bar. This shifts the focus of lubrication engineering towards viscosity control, shear stability, and chemical compatibility.
Shandong Longhai's technical roadmap prioritizes high-viscosity-index Group III hydrocracked base stocks and Polyalphaolefin (PAO) synthetic base oils. Unlike traditional Group I mineral oils, these advanced bases have uniform molecular structures. This provides superior volatility resistance, lower pour points, and oxidation stability at high operating temperatures. This chemistry allows modern heavy-duty engines to run hotter and longer without thermal breakdown.
Our research focuses on balancing wear protection with emission control. High levels of zinc dialkyldithiophosphate (ZDDP) protect against wear but can degrade catalyst systems. We resolve this by incorporating organic friction modifiers, shear-stable viscosity index improvers (VII), and ashless dispersants. These additives keep soot particles suspended, preventing abrasive wear in high-pressure regions like the valve train and cylinder liners.
Future heavy-duty engine designs emphasize fuel economy. Lubricant viscosities are shifting from traditional 15W-40 oils to low-HTHS (High Temperature High Shear) fluids like 5W-30 and 10W-30 (API FA-4 categories). Lower viscosity reduces internal engine drag, improving fuel efficiency. Our lab is currently testing next-generation bio-synthetic, low-viscosity oils designed to reduce carbon emissions while maintaining thin-film protection in severe conditions.
Discover how our automated production lines and raw material networks provide competitive advantages to global buyers.
Shandong Longhai's manufacturing facility is located in Zibo, Shandong—a major petrochemical hub in China. This location provides access to high-quality base oils and additives, minimizing raw material transport times and cost volatility. Our 131-acre plant has an annual blending and packaging capacity of 200,000 tons, ensuring we can fulfill bulk international orders without delays.
Our production floor features automated blending and filling machinery. The filling systems use precision metering principles, achieving a filling accuracy of 1‰ to 2‰. This system increases packaging speeds by 20% to 35% compared to semi-automatic operations, allowing us to package bulk runs quickly. These automated systems also help ensure clean filling environments, protecting products from contamination before sealing.
Our shipping logistics are designed for international efficiency. Located close to the Port of Qingdao, we can quickly dispatch containerized shipments, bulk flexitanks, and IBC totes to international shipping routes. This proximity helps lower logistics costs and shorten delivery times to key shipping channels.
Additionally, we maintain buffers of base stocks and additive packages from global suppliers. This inventory management strategy helps mitigate international market volatility and supply chain disruptions, allowing us to maintain stable pricing structures and delivery schedules for contract OEM partners.
From custom chemistry formulations to retail-ready packaging design, we offer comprehensive services to global brands.
We develop synthetic and semi-synthetic lubricant recipes tailored to specific vehicle specifications, local climates, and market requirements, meeting API and ACEA standards.
We support batch runs ranging from pilot tests to large-scale retail campaigns, covering engine oils, transmission fluids, and industrial lubricants with various packaging sizes.
All formulas undergo verification testing in our ISO-compliant laboratory. We provide independent third-party test reports for compliance and verification.
We offer technical assistance with packaging design, labeling regulations, translation services, and customs documentation to streamline international distribution.
Evaluating mechanical applications, target markets, and budget parameters.
Developing lubricant recipes using selected base oils and additive components.
Conducting ASTM testing on viscosity profiles and load thresholds.
Scaling up production using automated blending and packaging lines.
Arranging customs clearance and shipping logistics to target ports.
Every batch is tested to confirm compliance with international lubrication standards before shipment.
Discover our wider range of vehicle lubricants, motorcycle oils, air compressor protection, and synthetic diesel solutions.
Visual documentation of our automated production capacity, high-speed bottling, and logistic storage facilities.
Our environmental and safety protocols are designed to manage emissions, control wastewater, and optimize energy use. The ISO 14001 certification guides our waste mitigation and resource allocation strategies across our production facilities.
For workplace safety, our ISO 45001 framework establishes protocols to mitigate industrial hazards and minimize risk. These safety and quality processes are designed to support consistent production schedules for our global trade partners.
Expert technical insights regarding selection, formulations, OEM capabilities, and global distribution logistics.
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