What Are the Effects of Excessive Engine Oil Temperature?

[DiIsaac]

Excessive engine oil temperature has the following effects: Impact on Lubrication: Excessively high temperatures cause the oil film to thin, increasing friction and accelerating engine wear. At the same time, internal engine components, including metal and rubber parts, will over-expand. Rubber aging accelerates and may even fail directly, while metal components may experience excessive pressure and damage. Furthermore, if the temperature exceeds the boiling point of the coolant, the engine may overheat, leading to coolant evaporation and the formation of vapor in the engine compartment, significantly reducing cooling efficiency and causing the engine temperature to rise even faster. Engine Shutdown: When the engine temperature is too high, some vehicles may automatically shut down the engine. If the issue is less severe, an alarm may sound. In such cases, the driver should also manually turn off the engine to avoid further damage, as excessive temperature poses multiple risks to the vehicle.