Longhai CH-4 Diesel Engine Oil - Premium Wear Protection from China Suppliers & Factory for Heavy-Duty Engines
Key Features & Benefits
✅ Ultimate Wear Protection Under Heavy Loads
- Fortified with extreme-pressure anti-wear additives to minimize friction and protect critical engine components (pistons, bearings, camshafts) during low-speed, high-torque operation
- Ideal for long-haul transportation, construction, and mining equipment that operates under continuous stress
- Specialized additive package maintains protective oil film even under severe pressure conditions
✅ Exceptional Cleanliness & Soot Control
- Advanced detergent and dispersant additives prevent sludge, varnish, and piston deposits even in high-soot environments
- Maintains engine cleanliness for smooth operation and extended engine life
- Superior soot dispersion prevents oil thickening and maintains proper oil flow to critical components
✅ High-Temperature Stability & Oxidation Resistance
- Hydrotreated base oils provide outstanding thermal stability, reducing oil breakdown during prolonged high-speed operation
- Resists viscosity thickening to ensure continuous lubrication under extreme heat conditions
- Advanced antioxidant additives protect against thermal degradation and deposit formation
✅ API CH-4 Certified for Modern Diesel Engines
- Meets API CH-4 specifications for enhanced protection of turbocharged and EGR-equipped engines
- Compatible with low-sulfur diesel fuels to help reduce emissions and protect aftertreatment systems (DPF, SCR)
- Suitable for both older and modern engine designs requiring robust performance
✅ Improved Fuel Efficiency & Extended Drain Intervals
- Optimized viscosity and friction modifiers contribute to better fuel economy
- Strong TBN (Total Base Number) retention neutralizes acidic byproducts, extending oil change intervals
- Reduces maintenance costs while maintaining engine protection
Technical Specifications
| API Classification | CH-4 |
|---|---|
| Viscosity Grades Available | 15W-40, 10W-30, 20W-50 |
| Base Oil Type | Group III Hydrocracked |
| Key Additives | Extreme Pressure Anti-Wear, Detergents, Dispersants, Antioxidants |
Recommended Applications
Heavy-duty truck fleets
Construction and mining equipment
Agricultural machinery
Industrial power generators
Turbocharged diesel engines with EGR systems
Why Choose Longhai API CH-4?
- Proven Protection:
Laboratory tested and field proven in extreme operating conditions
- Cost Effective:
Extended drain capability reduces maintenance costs
- Engine Longevity:
Keeps engines cleaner for longer service life
- Environmental Compliance:
Helps meet emission standards while protecting aftertreatment systems
Frequently Asked Questions (FAQ)
What are the primary benefits of Longhai API CH-4 Diesel Engine Oil?
Longhai API CH-4 oil delivers ultimate wear protection under heavy loads, exceptional soot control, high-temperature stability, improved fuel efficiency, and extended drain intervals to keep your fleet running longer and more efficiently.
Which viscosity grades are available for this diesel engine oil?
This high-performance engine oil is available in 15W-40, 10W-30, and 20W-50 viscosity grades to meet various regional climates and equipment manufacturer specifications.
Is this oil suitable for modern turbocharged engines with EGR?
Yes, our API CH-4 certified oil is specifically formulated to protect turbocharged and EGR-equipped modern diesel engines while remaining compatible with older engine designs.
What kind of base oil is used in Longhai API CH-4?
It is formulated using Group III Hydrocracked base oils, which provide outstanding thermal stability and oxidation resistance compared to conventional mineral oils.
Can I use this oil in agricultural and mining equipment?
Absolutely. It is highly recommended for heavy-duty truck fleets, construction machinery, mining equipment, agricultural machinery, and industrial power generators operating under continuous stress.