What is the normal engine oil temperature for a car?
2 Answers
For a car, the normal engine oil temperature ranges between 70 to 90 degrees Celsius. If the driver engages in aggressive driving, the engine operates under high load, causing the temperature to rise slightly, reaching 100 to 110 degrees Celsius. Therefore, an oil temperature of 100 degrees Celsius is also considered normal. However, if the oil temperature consistently exceeds 120 degrees Celsius, it is necessary to conduct a timely inspection to prevent varying degrees of damage. Engine oil is a substance enhanced with additives in base oil, primarily containing anti-wear additives, detergents, dispersants, and multi-grade oil viscosity index improvers. It is used for lubricating internal combustion engines, with its main functions being to reduce friction and wear on moving parts, remove sludge and varnish from the engine, neutralize acids produced by fuel and lubricant oxidation, improve piston ring sealing, and cool the engine by carrying away heat from moving components.
After driving for so many years, I've found that oil temperature significantly impacts engine health. For regular cars during normal driving, the ideal oil temperature typically ranges between 90°C to 110°C. During highway driving or climbing hills, it might rise slightly above 120°C, which is acceptable, but it's best not to consistently exceed 130°C. Low temperatures during cold starts in winter are normal, and they gradually rise after a few minutes of driving. If the oil temperature remains high for extended periods, it can thin out the oil, reducing lubrication effectiveness and potentially causing engine noises. Once, my dashboard showed an oil temperature warning, and upon checking, it turned out the cooling fan was stuck. Fixing it promptly prevented more serious issues. Remember to regularly check the coolant and radiator condition, and pay extra attention to temperature changes during summer traffic jams.
