What is the flash point of engine oil?

1 Answers
DelFelicity
07/30/25 3:23am
The flash point of engine oil is generally around 220 degrees Celsius. Below is relevant information about the flash point of automotive engine oil: 1. Meaning of engine oil flash point: The flash point of engine oil is an indicator of the oil's volatility. The lighter the oil's fraction, the greater its volatility, and the lower its flash point. Conversely, the heavier the oil's fraction, the lower its volatility, and the higher its flash point. Additionally, the flash point is also an indicator of the fire hazard of petroleum products. 2. Factors affecting the flash point: The level of the flash point depends on the density of the flammable liquid, the air pressure at the liquid surface, or whether the flammable liquid is mixed with light components and the amount of light components present. If the flash point of a flammable liquid suddenly decreases during use, it may indicate an accident involving the mixing of light oil or hydrolysis, which must be noted for certain synthetic oils.
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