Direct sourcing catalog with certified formulation approvals. Fully optimized for high thermal stability and extreme pressure parameters.
High-viscosity stability formulation protecting engine components and wet clutch systems under persistent high RPM.
Engineered for heavy-duty commercial fleets, meeting API CJ-4 parameters to control soot build-up and piston deposits.
Formulated to resist oxidation and carbon formation in high-pressure screw and reciprocating compressors.
Top-tier synthetic motor oil tailored for high-performance turbocharged gasoline engines, maximizing fuel economy.
High VI index mineral and synthetic blends providing reliable shear protection in extreme hydraulic circuits.
Guarantees system response efficiency, minimum vane pump wear, and superior water separation capability.
Specially formulated for heavy tractors and industrial powershift transmissions requiring high shear stability.
Formulated with reliable zinc-based additives to safeguard classic and modern multi-valve combustion engines.
Established in 2009, Shandong Longhai Lubrication Technology Development Co., Ltd. (headquartered in Zibo, Shandong) is a high-tech enterprise integrating R&D, production, and global sales. For over 15 years, we have dedicated our infrastructure to solving complex tribological challenges. Through strategic expansion, we own the domestic industrial trademark "Century Longhai" and distribute the strategic international brand British "A Ba" (Abro style) product series globally.
Our comprehensive production facility covers 131 acres, yielding an annual capacity of over 200,000 tons. Equipped with fully automated blending units and high-precision laboratories, we maintain complete control over the chemical chain. Our products carry PICC China People's Insurance Company Quality Insurance, giving global procurement managers complete reliability.
Understanding user intent and operational parameters is crucial when sourcing industrial gear oils. High-tier industrial sectors face challenges that standard oils cannot address.
Extreme pressure conditions in wind turbine and heavy mining gearboxes demand lubricants with active sulfur-phosphorus chemistry that forms a sacrificial barrier to eliminate fatigue-induced micro-pitting.
High shear stresses degrade polymers within lower-quality lubricants, causing drop-offs in oil film thickness. Longhai lubricants utilize premium base stocks to secure long-term viscosity retention.
Under continuous operation, oil temperatures can exceed 100°C. Our formulations prevent varnish buildup, extending service life up to 10,000 hours in standard environments.
To secure our place as a leading global supplier, Longhai has invested in state-of-the-art volumetric blending and filling technologies. Our filling lines utilize the high-precision metering principle, accommodating everything from 1L bottles to 1000L IBC containers.
In heavy industrial equipment, choosing the correct classification of gear oil is paramount to prevent premature breakdown.
Designed for enclosed spur, helical, and bevel gear units operating under moderate surface stress and temperature conditions. Formulated with selected paraffinic base oils combined with mild anti-wear and oxidation inhibitors. Ideal for packaging machinery, conveyors, textile mills, and machine tool gearboxes where service loads remain constant.
Engineered for extreme pressure (EP) profiles, high shock loads, and high-temperature steel-on-steel contacts. Formulated with advanced sulfur-phosphorus additives that actively reduce friction and shield gear teeth from scuffing, pitting, and adhesive wear. Ideal for heavy metal rolling mills, cement mills, mining haul trucks, and wind turbines.
We leverage our manufacturing scale to offer comprehensive customized options to international partners, from design to compliance.
Our OEM/ODM pipeline supports custom formulations, variable filling parameters, and international certification assistance. We collaborate directly with raw material suppliers such as Lubrizol, Afton, and Infineum to guarantee chemistry integrity.
A streamlined, professional lifecycle ensuring transparent development, quality verification, and punctual shipping.
Consultation on viscosity, application, and compliance target specs.
Base oil and additive selection by our laboratory chemists.
Rigorous physical and chemical evaluation for validation.
Volumetric batch blending and automated cleanroom packaging.
Customs documentation, ocean freight, and after-sales support.
Our commitment to quality management is verified by continuous external auditing and compliance certifications.
To guarantee the highest levels of quality and safety, Shandong Longhai Lubrication has implemented integrated management systems across all manufacturing phases.
The global lubrication landscape is shifting toward low-viscosity, high-durability fluids, and environmentally safe chemistry. Longhai is at the forefront of this transition.
Developing ultra-low viscosity fluids tailored for high-speed electric motor bearings and reduction gears, prioritizing copper corrosion protection and optimal heat dissipation.
R&D targeting synthetic ester-based gear oils that decompose naturally, designed specifically for environmental compliance in marine operations and forestry machinery.
Integrating IoT oil-quality sensors in industrial equipment to track viscosity degradation and contaminant accumulation in real time, reducing premature oil disposal.
A look inside our manufacturing base, clean testing labs, and raw material inventory reserves.
In-depth technical answers addressing common queries from global buyers and mechanical engineers.
API GL-4 and GL-5 gear oils are designed for different loading profiles and operational environments. API GL-4 contains moderate levels of extreme pressure (EP) additives (mostly sulfur-phosphorus based) and is suitable for spiral bevel and hypoid gears in sync transmission applications. API GL-5 contains almost twice the EP concentration, making it ideal for high-speed, shock-load hypoid axles.
Mixing them is generally not recommended, particularly in transmissions with yellow metal (copper, brass, bronze) components. The active sulfur in GL-5 oils can chemically react with and corrode copper synchronizers at high temperatures, causing premature shifting failure.
Zibo is a major industrial city in Shandong with a well-developed petrochemical industry, giving local manufacturers direct access to high-quality base oils (Group I, II, and III) and processing infrastructure. This minimizes internal logistics costs and allows manufacturers like Shandong Longhai to source raw materials efficiently, offering competitive pricing to global buyers.
Our state-of-the-art testing facility tracks several critical parameters to ensure batch-to-batch consistency: Viscosity Index (ASTM D2270), Flash Point (ASTM D92), Pour Point (ASTM D97), Copper Strip Corrosion (ASTM D130), and foaming characteristics (ASTM D892). We also use ICP atomic emission spectrometry to monitor additive concentration and protect against wear metals.
Our high filling precision ensures customers receive consistent, accurate volumes in every bottle. This prevents product loss on the production line, simplifies shipping compliance, and ensures that distributors and retailers receive exactly what they order, helping build a reliable brand reputation.
High-viscosity gear lubricants, multi-grade diesel engine formulations, and high-performance turbine oils for complex machinery operations.
Top API SP performance rating, preventing low-speed pre-ignition (LSPI) in modern turbocharged engines.
Formulated to handle sliding friction and prevent wear in bronze worm gear teeth.
High-performance gear lubricants providing thermal stability and micropitting protection in industrial environments.
Designed for heavy vehicles and mining haul trucks, protecting gears from scuffing under severe shock loading.
Formulated with reliable detergent chemistry to prevent ring sticking and piston deposit build-up.
Formulated with high water-separation and air-release properties to protect steam and gas turbines.
Ensures reliable low-temperature starting performance and high-temperature protection for heavy truck engines.
Classic formulation providing cost-effective oxidation stability and engine wear protection.
Our top-performing API and industrial formulations, trusted by global distributors and fleet operators.
Fully synthetic oil providing reliable protection against wear and LSPI in direct injection turbo engines.
Formulated to protect modern gasoline engines, maintaining clean engine parts and minimizing sludge.
Reliable gasoline engine formulation, providing oxidation resistance under diverse operating conditions.
Cost-effective engine protection formulation for passenger cars and light commercial vehicles.
Heavy-duty diesel engine oil designed to protect exhaust emission systems and control soot buildup.
Premium protection formulation for heavy-duty commercial fleets and diesel power units.
Designed for heavy vehicles operating in severe conditions, providing wear protection and soot control.
Reliable lubrication solution for high-speed four-stroke diesel engines requiring soot protection.
Real-world performance testing demonstrating the reliability and durability of Longhai lubricants across heavy industries.
Connect with our engineering laboratory to receive custom viscosity profiles, extreme pressure formulations, and scalable private label support.
Contact Our Technical Sales Team
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