Engineered to meet global standards (API, ACEA, and OEM specifications) for ultimate mechanical efficiency and protection.
A technical treatise on tribological performance, extreme shear stability, and the requirements of modern automotive & industrial machinery.
In modern automotive and heavy industrial drivetrains, the differential functions under some of the most challenging mechanical conditions. Hypoid gears, common in modern axles, experience a combination of high rolling and sliding friction. Without specialized lubricants, such as high-performance BG Differential Fluid, metal-on-metal contact would lead to rapid wear, micro-pitting, and catastrophic component failure. As high-torque drivetrains, commercial vehicles, and electric vehicles (EVs) continue to push the limits of mechanical power density, gear lubricant formulations must evolve accordingly.
As a leading Chinese supplier and exporter, Shandong Longhai Lubrication Technology Development Co., Ltd. has established a robust R&D framework to address these specific challenges. Our specialized formulations focus on maximizing extreme pressure (EP) protection, enhancing thermal and oxidative stability, and maintaining optimal viscosity-temperature characteristics. This whitepaper analyzes the chemical underpinnings of differential gear performance, the advantages of integrated industrial production in China, and how global procurement teams can optimize their lubricant supply chains.
Modern differentials subject the fluid to intense mechanical shear forces that break down polymer viscosity index modifiers. Longhai formulations employ shear-stable synthetic base oils (Group III & PAO) to maintain fluid film thickness under extreme mechanical stress, guaranteeing long-lasting gear protection.
Under heavy loads, axle temperatures can exceed 120°C. Standard gear oils suffer from rapid oxidation, resulting in sludge formation. Our premium fluids are engineered with advanced anti-oxidants to ensure excellent thermal tolerance, extending drain intervals and preventing seal degradation.
Utilizing sulfur-phosphorus extreme pressure (EP) chemistry, our lubricants form a sacrificial protective tribo-film at the metal contact points. This micro-layer prevents scuffing, welding, and high-load wear, protecting ring gears, pinions, and differential bearings.
Established in 2009 and headquartered in Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. is a high-tech enterprise integrating advanced lubrication R&D, large-scale production, and global export services. Over the course of 15 years, the company has built an all-inclusive industrial chain system dedicated to providing premium tribological solutions for both the global automotive sector and high-demand industrial applications.
Longhai Technology manufactures its flagship domestic brand "Century Longhai" alongside its strategic international cooperative brand, the British "A Ba" series. Our extensive portfolio covers diesel engine oil, gasoline engine oil, gear oil, hydraulic transmission oil, anti-wear hydraulic oil, specialized engine oil for engineering machinery, special natural gas engine lubricants, fully synthetic oils, automotive urea solutions, antifreeze, special motorcycle lubricants, turbine oils, and automatic transmission fluids. Every product line is backed by comprehensive quality insurance from the People's Insurance Company of China (PICC), offering global partners peace of mind.
Strategic technology leadership, high capacity, and automated precision in the heart of Zibo, Shandong.
Longhai consistently invests over 5% of annual revenues into technological innovation. We partner closely with national universities and petrochemical research academies to push the limits of shear-stable base oils, thermal tolerance, and nano-additive fluid technologies.
Spanning an industrial footprint of 131 acres, our primary production center has an annual blending capacity of 200,000 tons. Highly automated, computerized blending manifolds ensure consistent batch-to-batch quality matching rigorous API and OEM regulations.
Equipped with computerized volumetric metering filling systems, our automated packaging lines achieve an accuracy tolerance of 1‰ to 2‰. The system increases filling velocity by 20% to 35%, accelerating supply chain execution for critical global contracts.
Comprehensive private label and custom formulation solutions for global automotive brands, industrial chains, and equipment distributors.
Fully synthetic, semi-synthetic, or mineral-based gear oils and BG differential fluid configurations customized to your regional climate profile, axle configurations, and target performance requirements (API GL-5, limited slip, heavy duty).
Supports both specialized small-scale test batches and large-scale industrial runs. We offer a full range of packing formats, from 1L bottles to 4L cans, 18L pails, and 200L drums.
Our manufacturing processes align with ISO 9001 and IATF 16949, and we supply third-party certification reports (SGS, Intertek, etc.) to guarantee zero-defect compliance for export.
End-to-end support for packaging artwork, industrial label printing, global SDS compliance documentation, and customs clearance logistics to simplify international brand building.
Verified manufacturing quality matching rigorous global automotive standards, including ISO approvals and Mercedes-Benz ATF certification.
Quality reliability forms the foundation of Shandong Longhai's export system. The company has passed ISO 9001:2015 Quality Management System certification, ISO 14001:2015 Environmental Management System certification, and ISO 45001:2018 Occupational Health and Safety Management certification. Additionally, our automated transmission fluids carry official Mercedes-Benz MB-Approval, reflecting our commitment to advanced engineering, raw material consistency, and reliability under extreme operating conditions.
We streamline the sourcing process from the initial consultation down to bulk delivery and after-sales support.
Analyzing specific viscosity requirements, target operating temperatures, and vehicle application loads.
Our lab tailors additive packages and base oils to balance wear protection, fuel economy, and seals compatibility.
Supplying pilot-batch samples for testing in customer laboratory facilities or field validation programs.
Applying fully computerized automatic blending processes for bulk batching and high-accuracy packaging.
Managing ocean freight operations, customs export declarations, and providing technical support for your distribution teams.
Our quality laboratory works in coordination with global testing protocols to verify that batch viscosity remains stable under all conditions.
Continuous investment in environmental compliance, testing infrastructure, and reliable warehouse operations.
How our custom lubricant formulations perform under extreme load conditions across various transport and industrial sectors.
Long-distance heavy-duty trucks experience prolonged periods of high thermal load. Using standard oils can result in micro-pitting on hypoid gears. Longhai's BG Differential Fluid utilizes Group III base oils to minimize micro-friction, decreasing fleet maintenance expenses while increasing fuel mileage.
Excavators, wheel loaders, and graders operate in dust-heavy, high-shock load conditions. Our anti-wear hydraulic oil and heavy-duty gear oils feature specialized demulsibility additives, separating moisture rapidly and preventing foaming under demanding hydraulic pressure cycles.
For industrial gearboxes operating L-CKC or L-CKD systems, high shear-stress durability is vital. Shandong Longhai's industrial gear oil series contains advanced sulfur-phosphorus EP packages, securing machinery bearings and reducing downtime under high-torque operation.
Premium grade engine oils and gear lubricants developed for modern commercial operations.
Tour our state-of-the-art laboratory testing apparatus and production facilities.
Continuing our premium line of specialized industrial transmission, motorcycle and anti-wear lubricants.
Answering major technical, regulatory, and logistics queries for international purchasing managers and engineers.
Get in touch with our engineering team for sample requests, customized formulation support, and bulk export quotes.
Whether you require private-label packaging for automotive retail or high-performance industrial gear oils for heavy machinery operations, Shandong Longhai Lubrication Technology Development Co., Ltd. provides the manufacturing capacity, R&D expertise, and logistics reliability your supply chain requires.
Our team operates under a customer-first policy, ensuring prompt technical support, reliable sample dispatch, and consistent batch quality. Contact us today to request a quotation or discuss formulation options with our engineering lab.
Zibo City, Shandong Province, China
200,000 Tons Annual Output Capacity
Fully Insured by PICC China
Longhai