Next-Generation Protection for Modern Diesel Engines
Formulated with premium imported synthetic base oils and high-performance Afton additives, Longhai API CJ-4 Full Synthetic Diesel Engine Oil delivers unparalleled protection for today's advanced diesel engines. This cutting-edge formulation meets the most stringent industry standards while providing exceptional wear protection, outstanding high-temperature stability, and reliable cold-weather performance - making it the ideal choice for the most demanding applications.
Synthetic technology ensures superior oil film strength, minimizing metal-to-metal contact and preventing wear under extreme operating conditions
Advanced anti-wear additives provide critical component protection (turbochargers, pistons, bearings) even under heavy loads
Specialized friction modifiers reduce energy loss while maintaining protective oil film integrity
✓ Advanced High-Temperature Performance
Exceptional thermal and oxidation stability prevents oil breakdown in high-heat environments
Powerful detergency controls deposits and soot accumulation to maintain engine cleanliness
Resists viscosity breakdown in turbocharged applications, ensuring continuous protection
✓ All-Climate Performance
Superior cold-flow properties enable quick cold starts and instant lubrication in freezing conditions
Maintains stable viscosity across wide temperature ranges for consistent protection
Excellent pour point characteristics for reliable operation in arctic conditions
✓ Meets Stringent Industry Standards
Fully compliant with API CJ-4 and ACEA E7-12 specifications
Compatible with DPFs (Diesel Particulate Filters) and other aftertreatment systems to help reduce emissions
Low SAPS (Sulfated Ash, Phosphorus, Sulfur) formulation protects emission control systems
✓ Extended Drain Capability
Enhanced TBN (Total Base Number) retention effectively neutralizes acids for extended service life
Reduces maintenance costs while maintaining peak engine performance
Advanced additive package resists depletion for longer-lasting protection
Technical Specifications
Base Oil
Premium Synthetic (Group III/IV)
Additive Package
Afton Technology
Available Viscosity Grades
15W-40, 10W-30
API Classification
CJ-4
ACEA Specifications
E7-12
OEM Approvals
Meets major manufacturer requirements
Recommended Applications
✔Modern diesel engines with exhaust aftertreatment systems
✔Heavy-duty trucks and commercial fleets
✔High-performance turbocharged engines
✔Construction and mining equipment
✔Long-haul transportation vehicles
Why Choose API CJ-4 Synthetic?
-Proven Performance: Extensive laboratory and field testing validates superior protection
-Cost Efficiency: Extended drain intervals reduce total cost of ownership
-Engine Longevity: Keeps critical components cleaner for longer service life
-Environmental Compliance: Helps meet Euro VI/EPA 2010 emissions standards
Experience the difference with our advanced CJ-4 synthetic formula - engineered to protect your investment and maximize operational efficiency.
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Frequently Asked Questions
What are the primary benefits of API CJ-4 synthetic engine oil?
API CJ-4 synthetic engine oil provides ultimate engine protection, advanced thermal stability under high temperatures, reliable cold-flow performance in freezing climates, and extended drain capabilities to reduce overall maintenance costs.
Is this synthetic oil compatible with modern emission control systems?
Yes, it features a Low SAPS (Sulfated Ash, Phosphorus, and Sulfur) formulation that is fully compatible with Diesel Particulate Filters (DPFs) and other aftertreatment systems to help minimize emissions.
What viscosity grades are available for this product?
This synthetic engine oil is available in 15W-40 and 10W-30 viscosity grades to meet different operating environments and manufacturer specifications.
Can this oil be used in extreme cold weather?
Absolutely. The oil is engineered with superior cold-flow properties and excellent pour point characteristics, enabling quick cold starts and instant lubrication even in freezing or arctic conditions.
How does this oil help extend drain intervals?
It is formulated with enhanced Total Base Number (TBN) retention, which effectively neutralizes harmful acids over a longer period, preventing oil breakdown and allowing for extended service intervals.
What types of machinery and vehicles are recommended for this oil?
It is highly recommended for modern diesel engines with exhaust aftertreatment, heavy-duty commercial fleets, high-performance turbocharged engines, long-haul transportation vehicles, and heavy equipment used in construction and mining.
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