Sinopec Great Wall Zunlong T300 Diesel Engine Oil CF-4 Launched for Heavy Duty Trucks and Gensets
Sinopec Great Wall Zunlong T300 Diesel Engine Oil Launched for Heavy-Duty Diesel Fleets
Sinopec has expanded its Zunlong heavy-duty diesel engine oil family with the introduction of the Great Wall Zunlong T300, an API CF-4 rated lubricant engineered for high-load, continuous-duty diesel engines. The new grade targets freight trucks, construction and mining machinery, and stationary generator sets that operate in demanding and dusty environments where reliable lubrication is critical.
Engineered for Heavy-Duty Diesel Engine Protection
The Zunlong T300 is built with a high-performance anti-wear additive package that forms a durable protective film on critical metal surfaces, reducing friction and extending engine life even under sustained high-temperature and high-load operation. Its advanced detergent and dispersant system keeps pistons, rings and oil galleries clean, minimizing carbon deposits and soot build-up that can rob an engine of power and fuel efficiency.
Key Performance Features
- Effective cleaning power — reduces carbon and sludge deposits to keep the engine clean and minimize component wear.
- High-performance anti-wear additives — deliver effective anti-wear capability and extend engine service life.
- Excellent viscosity-temperature behavior — maintains stable viscosity with minimal change during service.
- Strong alkali retention and corrosion resistance — provides excellent oxidation resistance under high temperature and high load conditions.
Technical Specifications
| Item | Zunlong T300 |
|---|---|
| API Service Category | CF-4 |
| National Standard | GB 11122—2006 CF-4 |
| SAE Viscosity Grade | 20W-50 / 15W-40 |
| Kinematic Viscosity (100°C) | 18.86 mm²/s (20W-50); 14.98–15.41 mm²/s (15W-40) |
| High-Temperature High-Shear Viscosity (150°C, 10⁵ s⁻¹) | 4.92 mPa·s |
| Total Base Number (TBN) | 11.9 mgKOH/g |
| Flash Point (Open Cup) | 223–235 °C |
| Pour Point | −26 °C (20W-50); −28 to −12 °C (15W-40) |
OEM Approvals and Certifications
The Zunlong T300 carries technical approvals from leading international engine manufacturers, including Mercedes-Benz (MB 228.1) and Mack (EO-K2). These approvals confirm that the lubricant meets the stringent performance and durability requirements of global heavy-duty engine builders.
Applications
- Heavy-duty, high-turbocharged, high-power direct-injection diesel engines from approved international and domestic brands requiring CF-4 grade oil.
- Large generator sets with long continuous operating cycles.
- Commercial vehicles with heavy payloads and long continuous running hours.
- Construction and engineering machinery operating under high power and dusty conditions.
- Diesel engines requiring CF-4, CF or CD grade lubricants.
Availability
The Sinopec Great Wall Zunlong T300 is available in 20W-50 and 15W-40 viscosity grades and can be supplied in bulk, pails and drums to suit fleet operators, distributors and industrial buyers. For specifications, sample requests and volume pricing, please contact our export team.
