CF-4,CH-4,CJ-4, CI-4 20W50

Our factory specializes in producing 20W-50 viscosity grade diesel engine oil, fully covering CF-4, CH-4, CI-4, and CJ-4 API quality specifications. It is precisely tailored to meet the lubrication needs of diesel engines in different scenarios, such as commercial vehicles, construction machinery, and agricultural equipment.

1. Excellent High-Temperature & Heavy-Load Protection: The “20W” viscosity ensures smooth startup in environments above -15°C, while the “50” high-temperature viscosity maintains a stable oil film even under harsh conditions like long-distance high-speed driving, heavy loading, or high engine speeds. It effectively resists high-temperature shear, reduces wear on key components (e.g., pistons, crankshafts), and prevents oil thinning and failure due to high temperatures.
2. Full-Range Quality Grade Adaptation:

– CJ-4 Grade: The latest mainstream grade, designed for modern high-performance diesel engines (meeting Euro V/VI emission standards). It enhances soot dispersion, oxidation resistance, and wear protection, suitable for turbocharged and aftertreatment-equipped engines.

– CI-4 Grade: Adapts to diesel engines complying with Euro III/Euro IV emissions, with strong anti-wear and anti-foam properties, ideal for medium-to-heavy-duty commercial vehicles.

– CH-4/CF-4 Grades: Target older diesel engines (e.g., non-turbocharged or early turbocharged models in construction/agricultural machinery), providing reliable basic lubrication and deposit control.

3. Strong Environmental Adaptability: Particularly suitable for subtropical, tropical regions, or diesel engines operating in high-temperature, heavy-load conditions (e.g., mining machinery, long-haul trucks), ensuring long-term stable engine operation.