What is the most commonly used oil on board ships?

The most commonly used oil on board ships is 2190 TEP. This oil is specifically formulated for use in large marine diesel engines and is essential for lubrication in both main propulsion and auxiliary engines. Its properties include excellent thermal stability, resistance to oxidation, and the ability to withstand high pressures, which are critical for the demanding operating conditions of marine engines.

While other oils such as 23699, 15W-40, and ISO VG 68 may also be used in various applications, they are not as prevalent in the marine context as 2190 TEP. For instance, 23699 is typically a synthetic oil that might be used in specialized scenarios, while 15W-40 is a multi-grade oil often utilized in automotive applications rather than on ships. ISO VG 68 represents a specific viscosity grade of oil commonly used in industrial settings, not directly in the context of marine propulsion. Thus, 2190 TEP stands out as the industry standard for ships, ensuring reliability and efficiency in vessel operations.