Longhai Heavy-Duty Gear Oil Supplier in China - Extreme Pressure Protection from a Leading Factory
Key Features and Benefits
1. Exceptional Thermal Stability
- High-Temperature Resistance: Prevents oil breakdown and sludge formation even under sustained heavy loads.
- Oxidation Control Technology: Maintains viscosity stability, extending oil change intervals.
- Reduced Thermal Stress: Minimizes heat-related degradation, preventing premature gear system failure.
2. Extreme Pressure (EP) Protection
- Advanced EP Additives: Form a durable protective film on gear surfaces to prevent metal-to-metal contact.
- Prevents Scuffing, Pitting, and Micro-Welding: Ideal for hypoid gears and heavy-duty transmissions.
- Shock Load and High-Torque Performance: Maintains lubricating film integrity under extreme mechanical stress.
3. Superior Anti-Wear Performance
- Specialized Anti-Wear Additives: Significantly reduce friction between metal components.
- Protection Against Abrasive and Fatigue Wear: Extends gear lifespan and lowers maintenance costs.
4. Limited-Slip Differential (LSD) Compatibility
- Friction Modifiers: Eliminate chatter and shudder in limited-slip differentials.
- Smooth Power Transmission: Ensures seamless performance during sharp turns and high-load conditions.
5. Comprehensive Corrosion Protection
- Rust and Corrosion Inhibitors: Shield metal surfaces from moisture and acidic byproducts.
- Suitable for Harsh Environments: Effective in marine, off-road, and high-humidity applications.
- Storage Protection: Prevents pitting and surface degradation during equipment downtime.
6. Enhanced Efficiency and Longevity
- Optimized Viscosity: Reduces fluid friction and energy losses for improved fuel efficiency.
- Wide Operating Temperature Range: -30°C to 150°C ensures stable lubrication in extreme climates.
- Compatibility with Non-Ferrous Metals: Safe for use with brass, bronze, and other common gear materials.
Technical Specifications
API GL-5 Performance Rating
Complies with MIL-PRF-2105E Standards
Available Viscosity Grades: 75W-90, 80W-90, 85W-140
Applications: Manual transmissions, differentials, final drives, and industrial gearboxes.
Recommended Applications
- Heavy-Duty Truck and Bus Axles
- Mining and Construction Equipment
- Agricultural Machinery and Off-Road Vehicles
- Industrial Gearboxes Subject to Shock Loading
Why Choose Longhai Heavy-Duty Gear Oil?
- Proven Performance in Extreme Conditions
- Extended Drain Intervals, Reduced Downtime
- Broad Compatibility with Gear Systems
- Cost-Effective Wear Prevention
For equipment facing the toughest challenges, Longhai Heavy-Duty Gear Oil delivers unmatched protection and reliability.
Additional Information
Packaging Options: 1L, 4L, 20L, 200L
Shelf Life: 3 years in unopened, original containers
Expanded Technical Insights
Longhai Heavy-Duty Gear Oil is formulated with synthetic base oils and high-performance additives to meet the rigorous demands of modern machinery. Its shear-stable viscosity index improvers ensure consistent lubrication across a broad temperature spectrum, while its advanced EP additives react chemically with metal surfaces under extreme pressure to form a sacrificial protective layer. This layer prevents welding and scoring, even in high-stress applications such as rock-crushing or heavy hauling.
Independent laboratory tests confirm a 40% reduction in wear compared to conventional gear oils, translating to longer component life and lower total cost of ownership. The oil’s low-friction properties also contribute to energy savings, making it an eco-conscious choice for fleet operators.
For applications involving wet brakes or hydraulic systems, consult our technical team for compatibility guidance.
Environmental and Safety Compliance
- Biodegradable Additives: Minimize environmental impact in case of leaks.
- Non-Toxic Formulation: Safe for use in ecologically sensitive areas.
- RoHS and REACH Compliant: Free from hazardous heavy metals.
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Frequently Asked Questions
What is the API rating of Longhai Heavy-Duty Gear Oil?
Longhai Heavy-Duty Gear Oil meets the API GL-5 performance rating and complies with MIL-PRF-2105E standards, making it ideal for high-pressure, heavy-duty applications.
Which viscosity grades are available?
It is available in three common viscosity grades to suit different climate and load requirements: 75W-90, 80W-90, and 85W-140.
Is this gear oil compatible with Limited-Slip Differentials (LSD)?
Yes, it is fully compatible with LSDs. It contains specialized friction modifiers that eliminate chatter and shudder, ensuring smooth power transmission during turns.
What is the operating temperature range?
Longhai Heavy-Duty Gear Oil provides stable and reliable lubrication across a wide operating temperature range from -30°C up to 150°C.
Does this oil protect components made of yellow metals like brass or bronze?
Yes, the formula is specifically engineered to be safe and compatible with non-ferrous metals, including brass and bronze, commonly used in gear systems.
What packaging options are offered?
To meet different volume requirements, we offer packaging options in 1L, 4L, 20L, and 200L containers, with a shelf life of 3 years in unopened, original containers.

