Weiting CJ-4 is a high-performance heavy-duty diesel engine oil designed for engines equipped with exhaust gas recirculation (EGR). Its balanced additive package provides strong detergent and dispersant performance and thermal stability, keeping pistons clean and controlling soot in arduous on- and off-highway service. The low-ash formulation safeguards exhaust aftertreatment, while a robust TBN reserve copes with high-sulfur fuels common in emerging markets.
Commercial Vehicles
Typical Data
| Item | 15W-40 | 10W-30 |
|---|---|---|
| SAE Viscosity Grade | 15W-40 | 10W-30 |
| Kinematic Viscosity @100°C (mm²/s) | 14.6 | 11.0 |
| Viscosity Index | 138 | 150 |
| Flash Point (COC, °C) | 232 | 226 |
| Pour Point (°C) | -32 | -38 |
| TBN (mg KOH/g) | 10.0 | 10.0 |
| Sulfated Ash (%) | 1.1 | 1.1 |
Characteristics
- Optimised for EGR engines; controls soot and prevents filter blockage.
- Strong piston cleanliness under high-temperature operation.
- Good TBN retention on high-sulfur fuels.
- Shear-stable viscosity for consistent protection.
Application Range
- Heavy-duty trucks and buses with EGR systems.
- Off-highway construction and agricultural equipment.
- Generator sets and stationary diesel engines.
Base oilSINOPEC · GROUP II–III
CertificationISO 9001 · 14001 · 45001
TraceabilityBATCH-LEVEL
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