Premium SJ Grade Gasoline Engine Oil from China Suppliers - Superior Protection, Performance & Factory Direct Quality
Key Features and Benefits
1. Advanced engine protection
Reduces wear and friction: Specially formulated anti-wear additives minimize friction between engine components, protecting pistons, camshafts and bearings.
High Temperature Stability: Maintains viscosity at extreme temperatures, preventing oil breakdown and ensuring continuous lubrication.
2. Cleaner engine performance
Prevents sludge and deposits: Advanced detergents and dispersants keep engines clean by preventing the formation of harmful sludge and carbon deposits.
Corrosion Resistance: Protects engine components from rust and corrosion, even in wet or harsh conditions.
3. Improved Fuel Efficiency
Low friction formula: Reduces internal engine drag, helping to improve fuel economy and reduce emissions.
4. Four-season reliability
Excellent cold-start performance: Smooth flow at low temperatures ensures fast engine starts in winter.
Stable high-temperature performance: maintains protective lubrication in hot weather or under heavy loads.
5. Broad compatibility
Meets API SJ standards: Suitable for a wide range of gasoline engines, including older engines requiring SH or SG oils.
Seal-friendly formulation: Compatible with engine gaskets and seals to prevent leakage.
Technical Specifications
| API Certification | SJ |
| SAE Viscosity Grade | 10W-30, 10W-40 (other options available) |
| Base Oil Type | Highly refined mineral/synthetic oils |
| Key Additives | Antiwear (ZDDP), detergents, antioxidants, defoamers |
| Operating temperature range | -25°C to 40°C (-13°F to 104°F) |
Recommended Uses
Vehicle Types
Passenger cars, SUVs, light trucks and vans with gasoline engines.
Engine Compatibility
For naturally aspirated and turbocharged engines (see manufacturer's recommendations).
Ideal for
Daily driving, long trips and moderate towing.
Why choose our SJ Engine Oil?
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Extended engine life
Reduces wear and ensures long-lasting performance.
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Smooth running
Minimizes engine noise and vibration.
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Cost-effective maintenance
Keeps engines clean and reduces repair costs.
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Trusted quality
Rigorously tested to meet industry standards.
Maintenance Tips
Oil Change Intervals
Every 5,000-6,000 km (or as recommended by the vehicle manufacturer).
Regular Checks
Monitor oil level monthly and top up if necessary.
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Frequently Asked Questions (FAQ)
What is API SJ engine oil?
API SJ is a service category established by the American Petroleum Institute for gasoline engines. It is designed to provide robust protection against wear, high-temperature deposits, and oxidation in passenger vehicles.
Can I use SJ engine oil in modern engines?
API SJ is typically recommended for older gasoline engines (built in 2001 or earlier). For modern engines, it is recommended to follow the API specification suggested in your vehicle manufacturer's manual.
What are the main benefits of using SJ engine oil?
It offers excellent wear protection, keeps your engine cleaner by preventing sludge build-up, ensures stable viscosity at high temperatures, and provides reliable cold-weather starting.
How often should I change SJ engine oil?
It is recommended to change your oil every 5,000 to 6,000 kilometers, or according to your vehicle manufacturer’s specific service schedule.
Is this engine oil compatible with synthetic oils?
Yes, our SJ engine oil is formulated to be compatible with standard mineral and synthetic-based motor oils, as well as common engine seals and gaskets.