The SINOPEC 4040 ship medium‑speed engine oil manual describes its high‑alkali formulation, performance features, specifications and usage guidelines.
This manual presents SINOPEC 4040, a high‑performance, high‑alkali ship medium‑speed cylinder‑piston diesel engine oil. It is formulated with a paraffin‑based mineral base oil and selected high‑performance additives to meet the demands of engines using high‑sulfur fuel.
Key performance features include excellent alkalinity retention, acid neutralization, oxidation resistance, thermal stability, clean dispersancy, water separation, and rust protection. The document also provides typical data such as viscosity, flash point, pour point, and alkalinity, as well as storage, handling, and safety recommendations. This manual is written in Chinese.
| SAE Viscosity Grade | 40 |
|---|---|
| Kinematic Viscosity (100 °C) | 14.35 mm²/s |
| Viscosity Index | 96 |
| Flash Point (open cup) | 246 °C |
| Alkalinity | 40.1 mgKOH/g |
It is suitable for ship medium‑speed cylinder‑piston diesel engines or diesel generator sets that use fuel with sulfur content greater than 3.5 %.
Store the oil indoors and keep it dry to prevent water ingress and moisture.
Mixing with other brands or different types of oil should be avoided during use.