Premium SJ Grade Gasoline Engine Oil from China - Superior Performance & Protection by Trusted Suppliers and Factory
Key Features and Benefits
- 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.
- 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.
- Low friction formula: Reduces internal engine drag, helping to improve fuel economy and reduce emissions.
- 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.
- 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
Why choose our SJ Engine Oil?
Maintenance Tips
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Frequently Asked Questions
A: API SJ is a service category standard established by the American Petroleum Institute for gasoline engines. It ensures the oil provides reliable protection against engine wear, rust, and deposit formation, making it suitable for passenger cars and light trucks requiring this performance level.
A: Yes. The 10W-30 and 10W-40 viscosity grades are multi-grade oils designed for year-round use. The "10W" rating ensures excellent flow properties and smooth engine starts in cold winter conditions, while the "30/40" rating maintains critical oil film thickness in high summer temperatures.
A: For optimum engine health, we recommend changing the oil every 5,000 to 6,000 km, or in accordance with your vehicle manufacturer's specific guidelines. Regular changes help prevent sludge buildup and maintain engine efficiency.
A: Yes, our SJ engine oil is designed to protect both naturally aspirated and turbocharged gasoline engines. It provides high-temperature stability to protect critical turbocharger bearings under high heat and load conditions.
A: No. Our SJ engine oil is formulated with seal-friendly additives. It is highly compatible with standard engine gaskets and elastomeric seals, helping to keep them pliable and preventing leaks in both modern and older engines.