Modern heavy-duty diesel engines operate under extreme conditions, characterized by higher thermal loads, exhaust gas recirculation (EGR) systems, and selective catalytic reduction (SCR). Historically, conventional mineral oils sufficed for older powertrains. Today, the global push toward lower carbon emissions and ultra-low sulfur diesel fuel requires synthetic lubricants formulated to API CK-4 and FA-4 standards.
Synthetic diesel engine oil is formulated with Group III hydrocracked base oils or Group IV Polyalphaolefins (PAO), supplemented by advanced additive packages. These chemistries optimize soot dispersion, prevent viscosity breakdown, and maintain high total base numbers (TBN). High thermal stability prevents oil oxidation and deposits on pistons, extending oil drain intervals (ODI) and reducing overall equipment maintenance costs.
Established in 2009 and based in Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. is a high-tech enterprise integrating R&D, production, and sales. For over 15 years, we have built a complete industrial chain system, providing premium lubrication solutions for global industrial and transport fields.
Our brand portfolio includes "Century Longhai" and the strategic international strategic cooperation brand, British "A Ba" series. Product categories cover diesel engine oil, gasoline engine oil, gear oil, hydraulic transmission oil, anti-wear hydraulic oil, specialized machinery oil, natural gas engine oil, full synthetics, automotive urea solution, antifreeze, motorcycle oil, industrial oil, and automatic transmission oil. All products are insured by PICC (China People's Insurance Company) for global quality assurance.
Our production base spans 131 acres with an annual output capacity of 200,000 tons. Equipped with fully automated blending networks and smart testing laboratories, we meet standard and custom formulation demands efficiently.
Our filling production line operates on metering-based filling principles, suitable for diverse lubricant viscosities. This design achieves a filling accuracy tolerance of 1‰-2‰ while accelerating production speeds by 20% to 35%. This high automation level shortens lead times, allowing us to manage large bulk order volumes for international clients.
Located in Shandong, our factory benefits from proximity to key shipping ports (such as Qingdao Port), ensuring efficient international shipping networks, lower ocean freight costs, and predictable transit times.
Utilizing high-viscosity index base oils and premium additives to ensure excellent flow performance during low-temperature startup and robust shear stability under hot conditions.
Certified to ISO 9001-2015, 14001, and 18001 standards. Our automatic transmission fluids hold official Mercedes-Benz approval, confirming compliance with rigorous European OEM standards.
Partnering with PICC (China People's Insurance Company) to insure our lubricating oils, offering added liability protection and peace of mind for our international buyers.
To help procurement managers make informed decisions, this table illustrates the differences between synthetic base stock groups and conventional mineral formulations.
| Property Parameter | Group I / II (Mineral) | Group III (Hydrocracked Synthetic) | Group IV PAO (Fully Synthetic) | Longhai Blend Solutions |
|---|---|---|---|---|
| Viscosity Index (VI) | 80 - 105 | 120 - 140 | 140 - 180+ | Optimized 135 - 165 range |
| Pour Point (°C) | -9 to -15 °C | -20 to -30 °C | -45 to -60 °C | Custom down to -45 °C for Arctic climates |
| Oxidation Stability | Standard | High | Outstanding | Enhanced with target antioxidant additives |
| Volatility (Noack % loss) | 15% - 25% | 10% - 13% | 5% - 8% | Maintained below 10% for reduced consumption |
| Soot Dispersancy | Moderate | High | Superior | Formulated for modern EGR-equipped engines |
We provide end-to-end customization, assisting clients from formulation design through packaging design, safety compliance, and shipping logistics.
We review climate profiles, viscosity requirements, target emissions standards, and market positioning.
Our lab develops customized blends matching specific API, ACEA, and OEM specifications.
We perform rigorous laboratory analysis, measuring CCS viscosity, shear loss, and high-temp properties.
Orders are produced using automated blending and fast-filling lines at our 200,000-ton capacity base.
We offer continuous batch quality tracking, documentation support, and logistics integration.
We offer tailored fully synthetic and semi-synthetic lubricant formulations based on vehicle requirements, local temperatures, and regional fuel properties. For example, our formulas can be adjusted with higher TBN levels for areas where high-sulfur diesel remains in use, protecting engines from acid-induced corrosion.
Our OEM services include choice of packaging designs, customized label printing, and technical documentation support (including GHS-compliant Safety Data Sheets), helping you build a strong local brand identity.
Exporting industrial chemicals and lubricants globally requires adherence to strict regional safety protocols. Shandong Longhai Lubrication Technology ensures full compliance for seamless customs clearing:
Whether you are distributing in Southeast Asia, Central Asia, South America, or Africa, our compliance team prepares the necessary documentation to reduce your regulatory risk.
Longhai lubricants are formulated for heavy duty performance across demanding operating environments.
For heavy transport fleets running extended drainage schedules. Our oils control soot aggregation, reduce sludge buildup, and maintain protective film thickness, helping operators save on fuel and downtime.
For extreme-pressure, heavy-load environments like open-pit mines. Formulated to resist dust contamination, heat, and high shear forces, protecting engines from early cylinder wear.
For excavators, bulldozers, and cranes operating under stop-and-go load cycles. Provides anti-wear protection for critical engine components during cold starts and hot operating peaks.
Innovation is central to Longhai Technology. We reinvest more than 5% of annual revenues into R&D, collaborating with domestic universities and international research institutions to continuously optimize lubricant performance.
Our enterprise environment includes dedicated spaces for product research, a joint innovation center, and a testing laboratory. We focus on low-viscosity, heavy-duty engine oil developments (such as 5W-30 and 10W-30 CK-4 oils) that support modern fuel economy standards while protecting critical powertrain components.
API CK-4 lubricants offer improved oxidation resistance, shear stability, and aeration control compared to CJ-4. They are formulated to withstand the higher operating temperatures of modern engines, protecting emission control systems and supporting longer oil drain intervals (ODI).
Our automated filling lines use flowmeters to measure batch volumes rather than relying on standard time-based valves. This system maintains a filling tolerance of 1‰-2‰, reducing product loss and ensuring accurate volumes across small bottles and large intermediate bulk containers (IBCs).
Yes. We design customized semi-synthetic and fully synthetic formulations (including 0W-30, 5W-30, and 10W-30 grades) for cold-weather environments. By adjusting the ratio of Group IV PAO base stocks and adding targeted pour point depressants, we can achieve pour points down to -45°C, assisting with reliable low-temperature starting.
Our manufacturing facilities are certified to ISO 9001-2015 for quality control, ISO 14001 for environmental management, and ISO 18001 for occupational health and safety. Additionally, our automatic transmission fluids carry official Mercedes-Benz approvals, confirming compliance with European passenger and commercial vehicle specifications.
Our flexible manufacturing lines allow us to adjust MOQs based on the requested packaging type. For bulk drums (200L) or IBC totes (1000L), we can accommodate smaller initial trial batches. For customized small consumer packaging (such as 1L, 4L, or 5L bottles with custom label printing), higher minimum volumes apply to offset tooling and print run costs. Contact our sales department to discuss your requirements.
Shandong Longhai Lubrication Technology Development Co., Ltd. is committed to partner success. We design high-performance lubricants, build reliable supply chains, and deliver compliant products globally. Reach out to discuss your formula requirements, request samples, or coordinate a factory visit.
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