Advanced engine protections, special motorcycle oils, and extreme duty industrial oils engineered for global export.
An in-depth analysis of high-pressure injection diesel engine oil requirements, global trade demand, and technical specifications.
Turbocharged Direct Injection (TDI) systems operate under extremely hostile mechanical environments compared to naturally aspirated systems. Standard motor oils fail rapidly due to extreme shear forces, rapid thermal stress, and increased blow-by gas generation. Modern TDI engines feature high cylinder pressures (often exceeding 200 bar) and tight combustion tolerances. These conditions demand high-stability synthetic formulations capable of retaining a stable High-Temperature High-Shear (HTHS) viscosity rating.
Furthermore, the presence of Diesel Particulate Filters (DPF) and Selective Catalytic Reduction (SCR) systems requires modern TDI lubricants to utilize Low-SAPS (Sulfated Ash, Phosphorus, and Sulfur) chemistry. Excessive sulfated ash blocks particulate filters, increasing exhaust backpressure, damaging turbocharger bearing groups, and reducing engine output. As a professional wholesale TDI engine oil exporter, Shandong Longhai designs products to restrict ash formation, extending emission control systems' lifespan and maximizing fuel economy.
Industrial demand for high-performance diesel engine oils is rising rapidly across South America, the Middle East, Southeast Asia, and Central Europe. In these regions, reliable logistics pipelines and diesel-dominated transport sectors depend heavily on long-drain-interval oils to sustain operating margins. The transition to strict environmental standards, such as China VI, Euro VI, and EPA Tier 4/5, has compelled fleet managers to migrate from Group I/II mineral oils to Group III/IV synthetic blends.
Shandong Longhai Technology Development Co., Ltd. fills this vital supply gap. By sourcing premium hydrocracked and PAO base stocks combined with advanced package additives from industry leaders (Infineum, Lubrizol, Afton), we deliver wholesale-priced engine oils that match or exceed major multinational brands. We provide global supply chains with a dependable alternative that minimizes wear-rates and controls operational overhead.
Our current R&D efforts focus on next-generation molecular engineering. To prevent soot agglomeration—a typical issue in direct injection diesel systems—we implement high-molecular-weight polymeric dispersants. These hold soot particles in suspension, preventing oil thickening and abrasive wear on timing chains and valvetrains. Active zinc dialkyldithiophosphate (ZDDP) structures are balanced precisely against low-ash detergents to yield optimal boundary lubrication without poisoning catalytic converters.
Shandong Longhai products carry critical certifications ensuring seamless international customs clearance and OEM compliance:
Engineered values representing standard baseline profiles for fully synthetic direct injection products.
| Viscosity Grade | Kinematic Viscosity @ 100°C (cSt) | HTHS Viscosity @ 150°C (mPa·s) | CCS Viscosity (cP) | Sulfated Ash (wt%) | Flash Point (°C) | Pour Point (°C) |
|---|---|---|---|---|---|---|
| 0W-30 (Low-SAPS) | 11.8 - 12.4 | ≥ 3.5 | ≤ 6200 (-35°C) | 0.72 - 0.78 | 230 | -48 |
| 5W-30 (Mid-SAPS) | 12.0 - 12.5 | ≥ 3.5 | ≤ 6600 (-30°C) | 0.77 - 0.80 | 228 | -42 |
| 5W-40 (Heavy Duty TDI) | 13.8 - 14.5 | ≥ 3.8 | ≤ 6400 (-30°C) | 0.80 - 1.10 | 234 | -39 |
| 10W-40 (Heavy Fleet) | 14.2 - 15.2 | ≥ 4.0 | ≤ 6800 (-25°C) | 0.98 - 1.20 | 238 | -36 |
Combining world-class production infrastructure with flexible OEM customization options.
Equipped with intelligent production lines and precision laboratories to meet the customized needs of different customers. We customize synthetic profiles to suit specific regional temperatures and hardware specifications.
The company has passed ISO-9001-2015 quality system, 14001 environmental management system, and 18001 health management system certifications, with additional official Mercedes-Benz automatic transmission oil certifications.
Our filling lines use advanced volumetric metering. This ensures a precision tolerance of just 1‰-2‰, while boosting filling efficiency by 20% to 35% over traditional methods to ensure fast bulk deliveries.
Fifteen years of excellence in high-tech oil manufacturing and global distribution networks.
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. Deeply involved in the lubricant industry for over 15 years, the company has built a complete industrial chain system dedicated to providing high-quality lubrication solutions for global industrial and transportation markets.
As a reliable lubricant manufacturer, Longhai owns the domestic brand "Century Longhai" and maintains strategic cooperative rights for the international British "A Ba" series. Our extensive product portfolio covers diesel engine oil, gasoline engine oil, gear oil, hydraulic transmission oil, anti-wear hydraulic oil, specialized engineering machinery oil, natural gas engine oil, fully synthetic fluids, automotive urea solutions, antifreeze, motorcycle engine oil, industrial process oils, and automatic transmission fluids. All premium products are underwritten by PICC People's Insurance Company of China, ensuring global peace of mind.
With an annual production capacity of 200,000 tons across a modern 131-acre industrial campus, our R&D investments exceed 5% of annual revenue. Strategic partnerships with leading domestic universities and scientific institutes keep us at the forefront of tribological technology.
Custom branding, tailored chemistry, and complete compliance documentation for global buyers.
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.
Supports small-scale trial runs to high-volume manufacturing, spanning engine oil, transmission oil, and industrial lubricants. Package sizing options are highly flexible.
Certified by ISO 9001 and IATF 16949 systems. We provide comprehensive third-party test reports to verify all compliance and performance thresholds.
Demand Analysis
Formulation R&D
Sample Testing
Mass Delivery
After-Sales Support
In-depth responses to technical queries frequently raised by diesel distributors and engine oil importers.
Heavy-duty diesel engine oils, specialty turbine fluids, gear protectors, and multi-vehicle transmission oils.
Get in touch with our commercial export team to request wholesale pricing, OEM formulation design, or laboratory test reports.
Shandong Longhai Lubrication Technology Development Co., Ltd. remains committed to our primary directive: "planning big strategies, focusing on technology, creating high quality, and maintaining reputation." We actively optimize production processes to improve lubricant performance and reduce operating costs for partners worldwide.
Our core operating philosophy relies on the principle that "products reflect character, and quality is life." Contact us to discuss bulk orders, logistics pathways, or custom formulations for passenger cars, heavy truck fleets, and industrial gear systems.
Factory Address: Zibo, Shandong Province, China
Email: [email protected]
Production Area: 131 Acres
Export Capacity: 200,000 Tons / Year
Longhai