What is the flash point of engine oil?
2 Answers
The flash point of engine oil is generally around 200 degrees Celsius. Under vacuum conditions, the boiling point of engine oil reaches 850 degrees Celsius. The boiling and flash points of engine oil usually vary depending on the specific type of oil, which is typically indicated on the bottle. It's important to pay attention to these specifications during use. Precautions for using automotive engine oil: Choose high-quality oil whenever possible: Selecting premium engine oil can enhance vehicle performance and provide better lubrication. Full synthetic oils, in particular, not only protect the engine and reduce oil change frequency but also save on oil expenses. It's advisable to choose different oil viscosities according to seasons: opt for relatively thicker oils in summer and more fluid oils in winter. Understand the replacement cycle: The oil change interval isn't fixed and should be determined based on the owner's driving environment and habits. Generally, full synthetic oil should be replaced every 10,000 kilometers, but harsh driving conditions may require more frequent changes. Oil level should be slightly below the dipstick mark: When adding oil, control the quantity carefully. Excessive oil increases crankshaft rotation resistance, reduces engine output power, and may lead to oil burning. Therefore, maintaining the oil level slightly below the dipstick mark is recommended.
I've thought about engine oil for a while. Actually, its ignition point usually fluctuates between 220°C and 260°C. But remember, the normal operating temperature of a regular car engine typically ranges between 90°C and 110°C, so there's generally no worry about the oil catching fire under normal use. However, if the engine cooling system fails and poor heat dissipation causes the oil pan temperature to soar to 150°C or higher, then there's a real risk of spontaneous combustion. Especially during long summer drives or when climbing hills, if the dashboard's coolant temperature warning light comes on, you should pull over immediately to check. Don't assume the oil can withstand high temperatures and keep driving—if it catches fire, it could lead to serious trouble!
