What is the flash point of lube oil?

The flash point of lube oil is the minimum temperature at which it will vaporize to form an ignitable mixture in air. Typically, for many common lube oils used in gas turbine systems, the flash point is found to be around 400°F. This is important because it helps in ensuring safe storage and handling of the oil to prevent accidental ignition. Knowing the flash point is crucial for personnel working around these substances, as it informs them of the temperature at which precautions should be taken to avoid fire hazards. The value of 400°F aligns with industry standards for many lube oils, making it the most accurate choice among the options provided.