What is the most widely used gas turbine engine oil?

The most widely used gas turbine engine oil is MIL-L-23699 synthetic oil, which is specifically formulated to meet the rigorous demands of gas turbine engines. This type of oil is designed to operate under extreme temperatures and pressures, providing excellent lubrication, oxidation stability, and thermal stability.

The synthetic composition allows for a lower viscosity at high temperatures and improved flow characteristics, which are essential for maintaining effective lubrication in gas turbine applications. Furthermore, this oil supports a high flash point, reducing the risk of fire hazards in the engine environment, which is critical for operational safety.

In comparison, mineral oils are less effective in maintaining performance at the high temperatures and oxidative environments encountered in gas turbines. While ATF oil (automatic transmission fluid) and vegetable oils do have specific applications in other areas, they are not suitable for high-temperature gas turbine operations due to their lower thermal stability and inability to meet the necessary performance criteria.