What Causes the Engine Oil Warning Light to Illuminate in a New Car?

[JourneyAnn]

The reasons for the engine oil warning light illuminating in a new car are as follows: Excessive Oil Viscosity: The viscosity of engine oil is closely related to its quality. The higher the viscosity, the better the oil's resistance to high temperatures, and vice versa. However, higher viscosity is not always better. It is essential to use an oil grade that matches your engine's specifications. Blocked or Improperly Adjusted Pressure Relief Valve: To prevent excessive oil pressure in the lubrication system, which can increase engine power consumption and cause leaks at sealed connections, a pressure relief valve is installed in the main oil passage or oil pump. Its function is to limit the oil pressure in the lubrication system, ensuring it does not exceed the specified value. Engine Overheating: If the engine cooling system has excessive scale buildup, poor heat dissipation, prolonged overload operation, or delayed fuel injection timing, the engine may overheat. This accelerates the aging, deterioration, and thinning of the engine oil, leading to leaks through various clearances, a drop in oil pressure, and the illumination of the oil warning light.