Is it normal for engine oil temperature to reach 100 degrees?

[Josiah]

This is a normal situation. The normal operating temperature of oil is around 100 degrees. When driving at normal speeds, the cooling effect of the coolant reduces the oil temperature to around 80-90 degrees. However, at lower speeds, the effect of the coolant decreases, and the oil temperature rises (approximately 100 degrees). To check if the engine oil is overheating, mainly consider the following aspects: 1. Check if the oil level is sufficient and if the oil has deteriorated or contains too many impurities. 2. Check if the radiator is leaking. 3. Check if the electric fan is not working properly. 4. Check if the thermostat is functioning normally. 5. Check if the antifreeze is circulating poorly. 6. Check if the sensor is giving false readings. 7. Check if the piston ring seal is in good condition. 8. Check if other parts are mismatched, causing increased friction.