Wholesale Leading Differential Fluids Suppliers & Service

High-Performance Driveline Lubricants & OEM/ODM Solutions Built for Extreme Industrial Applications, Global Supply Chain Resilience, and Long-Term Mechanical Reliability.

Global Driveline & Differential Fluids Evolution

The technical transition from simple gear oils to smart, high-stability tribological systems.

Thermal & Oxidation Stability

Modern axles run hot under higher load profiles with reduced airflow. Next-generation differential formulations leverage synthetic Group III/PAO bases to prevent sludge buildup and viscosity creep, ensuring sustained micro-lubrication across continuous operations.

EP Additive Chemistry

Extreme Pressure (EP) additives react chemically under high sliding velocity and high unit load conditions. Using sulfur-phosphorus technologies, our formulations form a protective tribo-film on tooth profiles, preventing micro-pitting and surface wear.

Fuel Economy & Friction Reduction

Reducing shear loss in differential configurations lowers rolling resistance. Optimized shear-stable viscosity index improvers keep fluid thickness within optimal windows, increasing powertrain efficiency by 1.5% compared to traditional lubricants.

About Shandong Longhai

A premier global high-tech lubrication enterprise integrating R&D, manufacturing, and distribution.

Established in 2009 and headquartered in Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. is a high-tech enterprise dedicated to providing premium lubrication solutions for the global industrial and transport sectors.

Over more than 15 years, Longhai Technology has built a complete vertically integrated industrial supply chain. Our proprietary brand "Century Longhai" along with our international strategic cooperation brand, the British "A Ba" series, represent peak engineering performance in gear systems, diesel engine lubrication, hydraulics, and custom fluid formulations.

"Our brand products are fully insured by the People's Insurance Company of China (PICC), establishing a high level of market trust and security for bulk buyers worldwide."

Factory Facility Inside Industrial R&D Line Automated Filling Line Testing Equipment
15+
Years Industry Expertise
200K
Tons Annual Capacity
131
Acres Production Base
139+
Global Sales Networks
Automated manufacturing process

China Industry 4.0: Resilient Production

Longhai Technology operates state-of-the-art automatic blending and filling facilities. By deploying high-precision dosing systems, we ensure that every batch matches chemical design parameters exactly.

  • Precision Filling: High-precision metering filling lines control filling accuracy within 1‰ to 2‰.
  • Enhanced Speed: Automated control loops increase throughput by 20% to 35% over traditional plants.
  • Intelligent Logistics: Proximity to major ports provides stable raw base oil transport and competitive export freight times.
Advanced research laboratory

Global Procurement & Localized Deployment

Different operating conditions demand different fluid profiles. For extreme cold areas, low pour-point synthetic formulations ensure immediate differential lubrication upon startup. In tropical regions, high-viscosity index fluids prevent thermal shear breakdown.

By using precision shear-stable polymers and Group III paraffinic bases, our lubricants stay in grade under continuous pressure, reducing premature wear on hypoid gear configurations.

Industrial OEM & ODM Customization Services

Full formulation design, automated packaging solutions, and international standard certification support.

01

Formulation Engineering

Custom semi-synthetic or fully synthetic base fluid ratios built to match your specific vehicle or machine loads, ensuring compliance with API, ACEA, and OEM standards.

02

Flexible Packaging

Comprehensive packaging options from 1L bottles to 200L drums or 1000L IBC tanks. Fully customizable labels protect your brand identity globally.

03

Precision Dosing

Automated high-output filling systems ensure rapid dispatch and batch consistency, minimizing supply chain disruption for wholesale partners.

04

Compliance Testing

Comprehensive lab analysis and quality assurance testing (ASTM standards, foaming characteristics, copper corrosion resistance) verified before dispatch.

Certified Industrial Quality

Stringent compliance with global engineering and environmental standards.

We operate in compliance with modern manufacturing quality criteria. Shandong Longhai Lubrication Technology has passed:

  • ISO 9001:2015 Quality Management System Certification
  • ISO 14001 Environmental Management System Certification
  • ISO 45001 Occupational Health and Safety Certification
  • Mercedes-Benz Official Lubricant Approvals

Our strict control procedures guarantee high stability under heavy shear loads, helping fleet operators extend equipment life and reduce downtime.

ISO 9001 Quality System Certificate ISO 14001 Environmental Management Certificate Occupational Health and Safety Certificate API standard evaluation testing card Mercedes Benz approval test certification Enterprise high-tech innovation award

Strategic Partnership Process

From initial design to global delivery, we support every phase of your bulk lubrication order.

Demand analysis icon

Demand Analysis

We establish target parameters based on your operating environment and equipment load specifications.

Formula design icon

Formula Engineering

Our chemists balance base fluids and extreme-pressure additives to optimize gear protection.

Sample testing icon

Lab Testing

We test formulation samples for shear stability and foaming limits under high-pressure conditions.

Production delivery icon

Mass Production

Automated high-capacity blending and filling lines ensure fast turnaround times for bulk orders.

Technical support icon

Ongoing Support

We assist with customs clearance and offer batch tracking and analysis for global logistics.

Expert Q&A: Gear & Differential Oils

Detailed technical advice on differential fluid specifications, application parameters, and maintenance.

What is the difference between API GL-4 and API GL-5 gear oils?
API GL-5 oils contain up to twice the amount of Extreme Pressure (EP) additives compared to GL-4 oils. This makes GL-5 ideal for highly loaded hypoid gear configurations commonly found in modern differentials. However, these sulfur-phosphorus additives can react with yellow metals in manual synchromesh assemblies. Our formulation specialists carefully select and balance our additives to prevent corrosion in multi-metal assemblies.
Why is shear stability critical in heavy-duty differential fluids?
Differentials subject lubricants to intense mechanical shear, which can break down low-quality viscosity index improvers. When these polymer chains shear, the oil thins out, reducing the protective lubricating film. Our formulations utilize shear-stable polymer technology to maintain viscosity and protect high-load gears under extreme working conditions.
How do synthetic gear lubricants compare to conventional mineral oils?
Synthetic gear oils offer better thermal stability, a higher natural viscosity index, and excellent low-temperature fluidity. This reduces startup friction, improves fuel economy, and extends oil drain intervals. Conventional mineral lubricants degrade faster under heavy heat load, requiring more frequent maintenance.
What customization capabilities does Shandong Longhai provide for bulk orders?
We offer full OEM and ODM services. This includes developing custom formulations (Group II, III, or IV base fluids), adjusting viscosity grades, and adding specialty performance packages. We also provide full packaging customization, from design to labeling, and support compliance testing.
How does factory automation affect lead times and consistency?
Our Zibo manufacturing base uses automated batching and metering filling systems with an accuracy of 1‰ to 2‰. This increases overall throughput by 20% to 35% compared to manual lines, ensuring consistent batch chemistry and reliable lead times for large wholesale orders.