Explore our high-performance heavy-duty motor, engine, and gear oils engineered under strict ISO-9001 quality systems for extreme operational reliability.
Shandong Longhai Lubrication Technology Development Co., Ltd., founded in 2009 in Zibo, Shandong, is a key national high-tech enterprise integrating R&D, advanced manufacturing, and global exportation. Over more than 15 years of dedicated industrial focus, we have built a fully integrated supply chain for high-performance lubrication technologies.
As an industry-leading manufacturer, Longhai owns the proprietary brand "Century Longhai" and operates global strategic development for the prestigious British "A Ba" series. Our comprehensive catalog supports global shipping for diesel engine oil, gasoline engine oil, gear oil, hydraulic transmission oil, anti-wear hydraulic oil, specialized engineering machinery lubricants, natural gas engine oil, full synthetic formulas, motorcycle lubricants, and customized industrial blends.
Delivering chemical innovation since 2009 from our central Zibo headquarters.
Fueled by 131 acres of state-of-the-art automated blending and packaging systems.
Widespread regional distribution across 29 provinces and international export routes.
Continuous academic partnerships to refine tribological properties and eco-profiles.
An Industry Whitepaper on Mechanical Tribology, Viscosity Optimization, and Global Export Compliance.
Modern manual transmission systems face severe operating conditions driven by higher torque densities, aerodynamic packaging profiles, and extended oil drain intervals (ODI). Consequently, standard industrial formulations no longer meet the shear-stability requirements of modern vehicle fleets.
In the modern tribological landscape, manual gearbox oil (MGO) must deliver balanced synchronization coefficients alongside heavy-load gear face protection. Overcoming micro-pitting under high-temperature cycles demands synthetic base stocks (Group III, PAO, and Esters) enhanced with thermally stable extreme pressure (EP) additives. Our chemical engineering teams focus on lowering fluid drag while maintaining reliable boundary lubrication films.
A crucial challenge in MGO formulation is synchronizer performance. Unlike automatic transmissions, manual gearboxes rely on controlled friction to match shaft speeds during gear shifting. A lubricant that is too slick causes gear clash (clashing noise and synchronizer ring wear). A fluid with poor shear stability loses viscosity under high loading, leading to metallic contact.
We optimize MGO formulations using advanced phosphorus-sulfur additive packages designed to protect yellow metals (bronze/brass) and molybdenum-coated synchronizers without causing corrosive wear.
For global heavy industry purchasing agencies, procurement managers face key pain points when importing lubricants:
Longhai Technology addresses these challenges by maintaining a fully integrated testing framework. Each consignment leaving our refinery undergoes standard ASTM D-series testing, tracking kinematic viscosity at 40°C and 100°C, copper corrosion index, shear stability index (SSI), and pour point.
By offering tailormade viscosities (e.g., 75W-80, 75W-90, 80W-90 API GL-4/GL-5/MT-1), we enable fleet operators to reduce parasitic energy losses, resulting in measurable fuel economy improvements across long-haul commercial vehicle routes.
Engineered for high-volume supply chains. We operate precision laboratory setups to maintain international quality standards.
Our packaging facilities utilize high-accuracy volumetric and mass-flow metering systems. The filling precision is kept within 1‰ to 2‰. This design increases processing speeds by 20% to 35% compared to conventional manual techniques, guaranteeing rapid export turnarounds.
Our quality system is certified under ISO-9001-2015, ISO-14001 environmental management, and ISO-45001 occupational health. Our automated transmission fluids hold Mercedes-Benz OEM performance verifications, providing direct technical compatibility.
We work closely with university research centers to customize key physical properties. We modify additive concentrations, viscosity indices, base stock ratios, and friction characteristics to align with specific regional climates or load conditions.
Comprehensive, customized private-label development supporting global brands from chemical engineering to final export packaging.
Custom semi-synthetic or fully synthetic lubricant formulations engineered for specific fleet loads, temperature profiles, and international benchmarks (API, ACEA, JASO).
Flexible production scales to support testing phases and high-volume orders. We package in 1L, 4L, 18L, 200L drums, and bulk IBC containers.
Third-party testing support (SGS, Intertek) alongside in-house GC-MS, ICP-OES elemental analysis, and high-temp shear testing for complete compliance reporting.
Comprehensive design support for packaging labels, SDS management under global GHS frameworks, export clearance handling, and bulk shipping logistics.
Demand Analysis
Confirm technical profiles and viscosity grades.
Formula Design
Blend base oils and optimized additive packages.
Sample Verification
Run wear and oxidation tests on trial batches.
Mass Production
Employ high-speed, automated filling systems.
Export Shipping
Ensure secure transport with custom clearance handling.
Our quality system is verified by international inspection bodies, ensuring reliable product performance in extreme operating environments.
A look inside our 131-acre manufacturing headquarters in Shandong, featuring modern blending reactors and precise testing equipment.
Developing low-viscosity, hybrid-compatible, and bio-degradable formulations to meet evolving global demands.
As electrification changes the global transportation sector, manual and multi-speed e-transmissions face unique operating conditions. Electrified drivetrains place new demands on transmission fluid design:
Our current R&D projects focus on developing low-viscosity synthetic fluids (70W/75W) designed to protect gear teeth under high speeds (exceeding 15,000 RPM) while remaining compatible with internal electric motors.
Traditional extreme pressure additives rely on active sulfur compounds that can corrode copper components at high temperatures. To address this, we are researching alternative nano-additive technologies.
Using nano-graphene, surface-functionalized silica, and synthetic esters, we create temporary protection films that minimize sliding friction on gear surfaces. These developments allow us to reduce sulfur content, extend manual transmission life, and improve overall fuel economy.
Additionally, we are expanding our R&D into bio-degradable saturated esters derived from renewable plant oils, providing sustainable lubrication solutions for environmentally sensitive sectors like forestry, agriculture, and marine transport.
Technical answers to common questions about industrial formulation, viscosity standards, and global shipping.
Premium engine and gear oil grades designed for commercial fleets and passenger vehicles.
Engineered to protect machinery under heavy loads and demanding operating conditions.
We are committed to delivering high-performance, cost-effective lubrication solutions. By leveraging advanced manufacturing techniques and technical innovations, we continuously develop quality products designed to meet global industrial needs.
Whether you require standard bulk gear oils or custom formulations for extreme operational environments, our technical support teams are here to assist. Get in touch with our export office today to request product specifications, certifications, and pricing options.
Longhai